Fish, frogs and most aquatic annimals release their eggs and sperm into the water for fertilization. however, may organisms, specially terrestrial animals, have evolved internal fertilizatioon. all of the following are advantages of internal fertilization, except:
a. fertilization can occur outside of water but inside the organism
b. once inside, the embryo may continue to develop internally
c. it requires the evolution of fewer specialized structures for reproduction
d. it makes it more likely that the eggs and sperm will find each other

c. It requires the evolution of fewer specialized structures for reproduction

Explanation:

Internal fertilization refers to the process of fusion of eggs and sperms inside the female body. The fusion of gametes mostly occurs inside the female reproductive tract during internal fertilization. This poses a need for the evolution of compatible reproductive structures in both genders of the internally fertilizing species to ensure that the sperms are deposited in or near the female reproductive tract.

you are certainly talking about this picture:

a: is the label of the white square, it is showing the  replication fork, formed by helicase (d) ==> so it is the site of dna separation and replication 

b: is a new dna brand that is following directly the replication fork, so it is continuous ==> built continuously from 5' to 3

c: dna polymerase cannot replicate dna on its own, it needs the of their proteins, and one of them plays the role of a clamp which fixes  the dna with the dna template and increases  the processivity of the enzyme. ==>   stops polymerase from falling off the  template.

d: is the enzyme responsible for forming the replication fork (helicase) ==> unwinds and separates dna into two strands

e: is the delayed strand, it is built  in the opposite sense of the helicase, so dna will be built in fragments ==> built  fragments from 5' to 3 joins

and finally f: is the enzyme that builds  the new dna strand (dna polymerase) ==>   adds nucleotides to make a new dna helix.

credit: gradman555p98x9p

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explanation: