I'm 99 percent sure that the answer is replication. Hope it helps!
Answer: Connective tissue or tissue
Explanation: Connective tissue is the tough, often fibrous tissue that binds the body's structures together and provides support and elasticity. It is present in almost every organ, forming a large part of skin, tendons, joints, ligaments, blood vessels, and muscles.
D is the correct answer :)
B. Heterozygous
Heter- means different
Heterozygous in genetics means an allele with different genes.
Bb has different alleles B and b.
Hope this helps.
