The correct answer includes a properly placed comma after the introductory clause. This guides the reader by separating the introductory phrase from the main clause.

The sentence 'She walks to school every day.' uses the singular verb form that agrees with the singular subject 'she.' The other options contain errors in verb conjugation or plural mismatches.

Option B correctly uses the apostrophe to show that the food belongs to one cat. The other answers either omit the apostrophe or misuse it.

The word 'joyful' shares a similar meaning to 'happy' as both express a sense of pleasure or contentment. The other words express opposite or unrelated emotions.

A concluding paragraph is intended to summarize the main points and reinforce the essay's thesis. It does not introduce new information or arguments.

The sentence 'She is smarter than her brother.' properly forms the comparative without redundant modifiers. The other options misuse comparative forms by combining extra modifiers.

The word 'quickly' is an adverb that modifies how the action of running is performed. It explains the manner in which running is carried out.

Option A correctly uses a semicolon to connect two independent but related clauses. The semicolon replaces a conjunction and offers a clean break between thoughts.

The theme of a literary work is its central idea or underlying message. It is not merely the sequence of events or settings, but what the text communicates at a deeper level.

Option A is problematic because the introductory phrase 'Hiking through the woods' is mistakenly linked to 'the birds,' creating a dangling modifier. The other sentences correctly identify the subject who is performing the action.

Option C correctly employs a colon after an independent clause to introduce a list. The punctuation helps readers anticipate the items that follow.

Option A correctly incorporates a subordinate clause at the beginning of the sentence with proper punctuation, clarifying the relationship between the ideas. The other options contain misplaced punctuation that obscures the sentence's meaning.

Option A properly uses a comma before the coordinating conjunction 'but' to join two independent clauses, forming a correct compound sentence. The other options lack appropriate punctuation.

The prefix 'un-' is used to negate the meaning of an adjective or adverb, effectively providing an opposite meaning. This makes Option A correct, while the other choices offer incorrect definitions.

In Option A, the adverb 'extremely' correctly modifies the adjective 'tall,' intensifying the description of the building. The other options misplace the adverb or disrupt the word order.

Foreshadowing is a literary device used to provide hints or clues about events that will occur later in the narrative. This builds anticipation and sets the stage for later developments.

Option B maintains a consistent list of gerunds to describe her interests, which is the key to proper parallel structure. The other options mix different forms, disrupting the parallelism.

Option A correctly uses an ellipsis without unnecessary spaces, signaling that some material has been omitted. This meets the standard conventions for punctuating omissions.

The correct distinction is that tone reflects the author's attitude toward the subject, while mood describes the emotional atmosphere experienced by the reader. This clear differentiation makes Option A the best answer.

Option A corrects the dangling modifier by clearly linking the action of finishing the assignment to the appropriate subject. This removes ambiguity about who completed the assignment.