El alumno (cubrir/escribir) en el cuaderno.
a. escribes
b. cubres
c. escribe
d. cubre

Option C, Escribe

Explanation: The sentence "El alumno (cubrir/escribir) en el cuaderno."

means:

"the student in the notebook"

The options to complete the blank are:

A: Escribes

B: Cubres

C: Escribe

D: Cubre

Both options A and B are in the wrong person, so we can discard them, now let's analie the options C and D.

C; escribe means "write" and D, cubre means "covers"

The option that makes more sense in the context of the sentence is "writes", then the full sentence would be:

"el alumno escribe en el cuaderno"

yo the answer is incorrect my dude. good luck! ⊂°ω°⊃

de estos colores. sounds about right.