In the sentence 'The first aircraft were small, noisy __ very uncomfortable', which word connects the two clauses?

• A. and
• B. but
• C. or
• D. so

Answer: (A)

This tests how to link items in a list of descriptions with a coordinating conjunction. The sentence is listing characteristics of the aircraft, so you want a connector that adds another descriptor. The word that fits is the one that means “in addition,” joining the last item in the series to the others. Using and makes the sequence read as a simple, even set of qualities: small, noisy and very uncomfortable. Using but would suggest a contrast (e.g., they’re small and noisy, but very uncomfortable), and or would present alternatives, while so would indicate a consequence. The choice fits how the adjectives describe the aircraft together, and you can include a comma before the final and if you follow the serial comma convention.