Why is the new DNA strand complementary to the 3′ to 5′ strands assembled in short segments?

Question: Part D Why is the new DNA strand complementary to the 3′ to 5′ strands assembled in short segments?

1. DNA polymerase can assemble DNA only in the 5′ to 3′ direction
2. it is more efficient than assembling complete new strands
3. the replication forks block the formation of longer strands
4. only short DNA sequences can extend off the RNA primers
5. DNA polymerase can assemble DNA only in the 3′ to 5′ direction

Fourth question (Part D):

The answer will be DNA polymerase can assemble DNA only in the 5′ to 3′ direction (First option).

Explanation:

As DNA polymerase only able to assemble DNA in the 5′ to 3′ direction, short segments of DNA complementary to the 3′ to 5′ strand can be generate.