Correct the phrase written in parentheses
Biologists want to experiment further (using specific variables, such as hunger, density of urchins, and species of starfish, to see) how the appetites of the urchins are influenced.
Select one answer
A
NO CHANGE
B
using variables: such as hunger, density of urchins, and species of starfish to see
C
using variables such as hunger density of urchins and species of starfish to see
D
using variables such as hunger, density of urchins, and species of starfish to see