Question

which of these is a heterotroph?○ plant○ producer○ consumer○ phytoplankton

Explanation:

A heterotroph is an organism that cannot produce its own food and must obtain energy by consuming other organisms. Plants, phytoplankton, and producers are autotrophs that make their own food via photosynthesis. Consumers rely on eating other organisms for energy, so they are heterotrophs.

Answer:

consumer