Which type of species plays a pivotal role in the habitat?

a. exotic species

b. specialist species

c. native species

d. keystone species

d. keystone species

Explanation:

is one that plays a pivotal role in ecosystems, e. g., species of palm or fig trees that maintain all the vertebrate frugivores in a Peruvian rainforest for 3 months of the year when other trees are not in fruit

voila. good answer no?