According to Mark, how many men carried the paralytic who was lowered through the roof?

Answer: Four

The paralytic was carried by four men (KJV: borne of four), who opened the roof and lowered him on his mat.

“Then a paralytic was brought to Him, carried by four men. Since they were unable to get to Jesus through the crowd, they uncovered the roof above Him, made an opening, and lowered the paralytic on his mat.”— Mark 2:3-4 (BSB)