Final answer:
A forensic entomologist identifies insects at various stages of their life cycle, including eggs, larvae, pupa, and adults, as part of their role in estimating the time of death in criminal investigations.
Step-by-step explanation:
A forensic entomologist's job may include: Identification of insects at various stages of their life cycle, such as eggs, larvae, pupa, and adults. The correct answer to this question is B) Life cycle. Forensic entomologists use their knowledge of an insect's life cycle to estimate the time of death in a criminal investigation, based on the development stage of insects found on a decomposing body. They study the species and their development stages since different species have distinct life cycles and development rates, which are essential in forensic cases to provide accurate estimations.