After the DNA is unwound, what protein keeps the strands from reannealing?

a. DNA primase

b. Sliding clamp

c. Helicase

d. SSB protein

SSB protein.

Explanation:

DNA replication may be defined as the process of formation of daughter RNA molecule from the template DNA. The process of DNA replication occur in 5' to 3' direction.

The DNA strand must be unwound to initiate the DNA replication. The DNA strands must not reanneal for the replication process. Single stranded binding protein (SSB) bounds to the DNA strands and prevent them from re anneal.

Thus, the correct answer is option (d).