Which of the following genetic diseases results from a mutation that prevents protein dystrophin from forming?

The correct option is B

Duchenne muscular dystrophy

Duchenne's muscular dystrophy is a genetic disorder seen on the X chromosome. It is due to a mutation in the gene that codes for a protein called Dystrophin which is an important structural component of muscle. Without muscles become weak, and eventually paralyzed. This disease affects primarily boys as they have only one X chromosome. Eventually, the disease affects the respiratory muscles and these boys die due to paralysis of respiratory muscles.