According to the food web, what are the food sources for a leopard seal?

Question

a
phytoplankton, fish, penguins, and other birds
b
krill, fish, penguins, and other birds
c
phytoplankton, fish, krill, penguins
d
toothed whales, krill, penguins, and other birds

Answer 1

b
krill, fish, penguins, and other birds