Answer : option (c)
(c) A community includes all of the populations in a particular area while an ecosystem is only the abiotic factors in a particular area.
Explanation :
A community includes all of the populations in a particular area. It also includes biotic components such as plant, animals and bacteria.
On the other hand , ecosystem is only the abiotic factors in a particular area. Some of the biotics factors include water and temperature
So the required answer is option (c)