Final answer:
A ventilating opening within a crawl space should be located within 3 feet of each corner of a building according to building codes. Hence the correct answer is option A
Step-by-step explanation:
In accordance with building codes, a ventilating opening within a crawl space should be located within 3 feet of each corner of a building. This is to ensure proper air circulation and prevent moisture buildup in the crawl space.
Hence the correct answer is option A