Studying extracted DNA can reveal genetic information about the organism, including its evolutionary relationships, genetic diversity, and even potential traits or behaviors. However, it cannot provide exact information about what the organism eats, where it lives, or its physical appearance in detail. Instead, DNA can give clues about these aspects, such as identifying species or potential ecological roles, but it does not give a complete picture.
So, the most accurate statement is: It can reveal genetic information about the organism.