Question

multiple - choice question
why are trail cameras helpful for this research project?
all of the above.
they have only covered about 20% of the park so far.
some parts of the park are hard to get to because there are no roads.
they can identify new lions and add them to list of lions in the park

Explanation:

Trail - cameras can access hard - to - reach areas, monitor animal populations like lions, and the fact that they have only covered 20% doesn't mean they aren't helpful. The ability to identify new lions and access difficult areas makes them useful for research.

Answer:

All of the above.