Sentence Completion

1- .............................. since the only thing for which there is no need in a creative mind is a limit.

A) The human brain has been discovered to be able to host trillions of connections between neurons

B) It might come as a surprise to many whenever something new is discovered

C) Having substantial knowledge in a field does not mean being able to come up with new ideas

D) Innovation can only be achieved through the brain power of an R&D department

E) Children should be encouraged to have as broad an imagination as can be

I said A

2- ..................................., cloning is a highly controversial practice

A) Although it draws much criticism from animal welfare advocates

B) Despite the adverse effects observed in mammals that have been cloned

C) While some people claim that it is unethical and immoral

D) In spite of its potential risks and drawbacks

E) Due to concerns over human safety and ethical issues

I'm not sure but B?