Answer:
B:The formation of two or more species from a common ancestor.
Explanation:
Reproduction asexually has all of the following major advantages except for C. Genetic variability.
The answer is C. simply because the rest are not benefits but rather are harmful occurrences
A. talk about sheep having arthritis which is a disease and in this case genetic modification is possibly the cause of it
B. the transfer of modified genes to other crops is not a good thing because the genes are modified and this can cause unknown negative mutations
D. in general unpredictable genetic changes are most of the time negative and there's a small chance of that mutation being positive