When did mosquitoes become a threat to Brian?

• A. At noon.
• B. When the sun came up.
• C. At midnight.
• D. At dusk.

Answer: (B)

The situation tests how insect activity changes with time of day and how that affects Brian’s survival. Mosquitoes aren’t dormant through dawn; as daylight returns and warmth increases, they become active and start attacking. In the narrative, that morning moment when the sun comes up is when the mosquitoes first pose a real threat to Brian—breaching his stillness, making it hard to rest, and adding another layer of challenge to his search for safety. It isn’t at midnight or the middle of the day in the same way, and although mosquitoes can be troublesome at dusk, the text emphasizes the start of the day as the moment they become a problem for him.