Javier is blind from birth. robert lost his sight in a boating accident at age 16. who might have superior touch sensitivities during adult life?

The answer is; Javier

This is because when one is young, it is easy to re-learn because during this period the child is still learning the fundamental process of developing a major portion of their mental capacity - including language and communication - as their brain grows. This is unlike Robert whose brain has already been developed/wired a certain way and it takes time to rewire the brain.  

i think the answer is b.

b. lithosphere, asthenosphere, mesosphere   is the answer most likely