Question

Which verb correctly completes this sentence?

Julio _________ tocar la guitarra.

saben

sabe

conoce

conocen

Answer 1

You should note the difference between saber and conocer


Both mean to know... but,

Saber refers to knowledge of a topic (informational)
Conocer refers to knowing a person/place


Julio is trying to play a guitar, a guitar is not a place/person so conoce/r is out

To choose between sabe and saben you should know the subject

Sabe is singular
Saben is plural

Since we are only talking about Julio, we use singular