Correct Answer: D

Rationale: A mind map is a visual tool commonly used by writers to diagram ideas around a central concept. It helps in brainstorming and organizing thoughts by visually representing the relationships between different ideas. Choice A, a bar graph, is a graphical representation of data typically used to compare quantities. Choice B, a citation, is a reference to a source used in writing to give credit. Choice C, revision, refers to the act of reviewing, editing, and improving written work.

Correct Answer: B

Rationale: The correct answer is 'B: Joyful.' 'Joyful' is a synonym for 'happy' as both words convey feelings of pleasure, contentment, and delight. Choice 'A: Sad' is incorrect as it is an antonym of 'happy,' representing feelings of sorrow or unhappiness. 'Angry' in choice 'C' and 'Tired' in choice 'D' are also incorrect as they represent different emotional states and do not share the same meaning as 'happy.'

Correct Answer: A

Rationale: The prefix 'inter-' means 'among' or 'between,' which is most fitting in the context of 'intergalactic' as 'among galaxies.' 'Below,' 'around,' and 'above' do not convey the correct meaning of the prefix 'inter-' in this context.

Correct Answer: C

Rationale: The correct answer is C. A citation is necessary when using someone else's work, such as song lyrics, to support an argument in academic writing. In options A, B, and D, there is no need for a citation. Option A involves the professor teaching her own work, so no external citation is required. Option B refers to an original work by the speaker, which does not require citation. Option D mentions a well-known and accepted fact, which generally does not need a citation in academic writing.

Correct Answer: C

Rationale: The correct answer is "C: in." A preposition is a word that shows the relationship of a noun or pronoun to another word in the sentence. In this sentence, 'in' is the preposition, indicating the location of the heat relative to the room. Choices A, B, and D are not prepositions. 'It' is a pronoun, 'hot' is an adjective, and 'that' is a demonstrative pronoun in this context, not a preposition.