Final answer:
The subject of this question is Geography, and the question is asking about the biome characterized by a monsoon occurring every month at the quarter moon in a lagoon.
Step-by-step explanation:
The subject of this question is Geography. The question is asking which biome is characterized by a monsoon occurring every month at the quarter moon in a lagoon. A monsoon is a seasonal reversal of winds that brings heavy rains. Based on the provided information, the correct answer is A) Rainforest. Rainforests are known for their high rainfall and dense vegetation. They are found in tropical regions such as South Asia, where monsoons occur.