Question

Monica is learning ____ the wall​

Answer 1

Answer:

hola dear ,

on .

hope it's helpful for you .

mark me as brainlist .

Answer 2

The blank can be filled with the word "on"

So the correct sentence will be

Monica is learning on the wall.

There are other prepositions also but they can not be used here because it will not give the correct sense of the sentence.

We can define proposition as:

Prepositions are those words which are used before a noun or pronoun and denote the relation between the noun/pronoun and other parts of sentences.