Question

7 choose the word that best completes the sentence. some people think that middle and high schools should not open later ______ teenagers would then not be able to work after school. a unless b so (with a red x and blue circle on b) c because d until

Explanation:

To solve this, we analyze the logical relationship between the two clauses. The first clause is "middle and high schools should not open later" and the second is "teenagers would then not be able to work after school". The second clause gives the reason for the first, so we need a conjunction indicating cause.

• Option A ("unless") implies a condition (if not), which doesn't fit the causal relationship here.
• Option B ("so") indicates a result, but here the second clause is the reason for the first, not the result of the first.
• Option C ("because") is used to introduce a reason, which matches the relationship (the reason schools shouldn't open later is that teenagers couldn't work after school).
• Option D ("until") refers to a time condition, which is irrelevant here.

Answer:

C. because