Question

which sentence best summarizes the main idea of the passage?

1. mosquitoes need sugar from plants to have enough power to fly.
2. some people are more likely to be bitten by mosquitoes than others.
3. female mosquitoes bite animals and humans to get blood they need to make eggs.
4. the saliva that the mosquito injects into the skin is what causes the mosquito bite to itch.

Explanation:

To determine the best summary, we analyze each option:

• Option 1 focuses on mosquitoes' need for plant sugar for flight, which is likely a detail, not the main idea.
• Option 2 is about who gets bitten more, which is a secondary topic.
• Option 3 explains the primary reason female mosquitoes bite (to get blood for egg - making), which is a core concept about mosquito behavior related to reproduction, a key biological function.
• Option 4 is about why mosquito bites itch, a minor detail.

Answer:

1. Female mosquitoes bite animals and humans to get blood they need to make eggs.