Question

why is the experiment controversial?
a the embryos can develop into grown, cloned humans.
b the experiment requires destroying human embryos.
c the embryos are formed without fertilization by sperm.
d the cloning process can help save patients lives.

Explanation:

Human embryo - related experiments are controversial mainly because destroying human embryos challenges ethical and moral concepts as embryos are seen as the beginning of human life. Option A is about the potential of embryos to develop into cloned humans which is a long - term concern but not the most immediate reason for controversy here. Option C is about the formation method but not the core of the controversy. Option D is a positive aspect and not a reason for controversy.

Answer:

B. The experiment requires destroying human embryos.