Question

which two types of rock climbing are done without the use of ropes? free soloing bouldering trad climbing sport climbing

Explanation:

Free soloing is climbing without ropes or any protective gear. Bouldering is typically done at lower heights and often without ropes as well, relying on crash - pads for safety. Trad climbing and sport climbing usually involve the use of ropes for protection.

Answer:

A. free soloing, B. bouldering