Answer:
D. Los estudiantes simpáticos.
Step-by-step explanation:
To complete this exercise, you have to select the correct option that is the plural form of the sentence given.
Option A is not correct because ''simpático'' is not in the plural form.
Option B is not correct because it says ''el'' instead of ''los'' and also ''simpático'' like in option A.
Option C is not correct because it says ''el estudiante'' which is singular.
The correct option is D. Los estudiantes simpáticos.