Free solo climbers like Alex Honnold specializes in climbing up sheer cliff faces without ropes, but most professional climbers climb with ropes to protect from falls.
Choose 1 answer:
Choose 1 answer:
(Choice A) NO CHANGE
A
NO CHANGE
(Choice B) is specializing
B
is specializing
(Choice C) specialize
C
specialize
(Choice D) has specialized
D
has specialized
1 answer
(Choice D) has specialized