Why can the wolf be considered both a seconday consumer and a tertiary consumer?

A wolf can be considered as both a secondary and primary consumer because they feed on both primary and primary and secondary consumers. As a secondary consumer, wolves can feed on plant eaters [primary consumers] such as elk which is an herbivore. As a tertiary consumer, wolf feed on secondary consumers such as deer.

Mark as brainlistt

i believe the answer is c

1. is geographic distribution

2 is increasing complexity

3 is transitional forms