Question

the biggest threats to christmas island crabs during their annual migration are
a. dogs c. automobiles
b. cats d. fences
please select the best answer from the choices provided
a
b
c
d

Explanation:

Christmas Island crabs face various threats during migration. Automobiles are a major threat as they can run over the crabs on roads. Dogs and cats may not be as widespread a threat as automobiles in the context of migration across areas with traffic. Fences can be navigated or are less of a direct lethal threat compared to moving vehicles.

Answer:

C. automobiles