Answer:
I can't see the statements so I can't give a definite answer. However, think of it this way: We know the statement needs to add to the idea that insects are dangerous. So you need to chose the option that presents insects in a negative light or gives a specific reason to fear them. A neutral or positive fact about insects would not support the idea.
Is the answer a i think it is
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1. If you miss the class I take you some
2. When I see Sandra, I ask her what she thinks.
3. We have time for lunch if the train leaves at 12 o'clock
4. If I ask my boss for a pay raise, he will not give it to me
5. I cook dinner if you do the shopping
6. If the weather be nice, we go out for a walk
7. We go on Holiday when Al get some time of work