What is a condition in which nerves are entrapped between the metatarsal heads producing swelling with distal, radiating pain?

The correct answer is Morton's Neuroma.
This is a condition which affects the nerves between your toes, and causes you to feel as if you were 'walking on a marble.' You feel constant pain in the ball of your foot which can be helped relatively easy if you change your footwear. 

What are the options?

Ithink option a is correct because you cannot donate a different blood group than yours because it won't match.option a says betsy can donate to mark. they have the same blood group so donation can happen.