2. Moquito bites are __ because they can cause a person to itch and scratch.

The question is asking for a word that describes the nature of mosquito bites in terms of their effect on a person. The word should indicate that mosquito bites are bothersome or irritating because they lead to itching and scratching. The correct word to fill in the blank should convey the idea that these bites are not welcome or are unpleasant due to the discomfort they cause.