Question

______ ustedes para que sirve el documento?

A. Conocen
B. Sabes
C. Saben
D. Conoceis

Answer 1

C. saben

Step-by-step explanation:

Answer 2

c. saben

to explain the word saber needs to know and in that sentance you're tying to say "do you guys know how to serve this domument?" or something similar