The right option is; A. Which species of cricket did you collect?
A dichotomous key can help to answer the question; which species of cricket did you collect?
A dichotomous key is a tool that is developed by scientists to assist its user to determine the identity of an unknown organism or objects. A dichotomous key contain two choices in each step that describe the characteristics of the unidentified organism. The tool helps users to accurately, and reliably identify an organism especially when two species are very similar to one another.