The answer would be:
C. Transcription
Here's a little more about gene regulation:
Gene regulation as mentioned already, is the process of turning genes on and off. In multicellular organisms, the different cells have the same DNA in them but through gene regulation, different sets of genes are expressed. The genes that are expressed determine the function and appearance of the cell.
F is option A
G is option D
<span>.Though unicellular [amoebas] have all the necessary cell organelles and a well-defined nucleus, therefore fulfilling the characteristics of eukaryotes.</span>
<span>a mature haploid male or female germ cell that is able to unite with another of the opposite sex in sexual reproduction to form a zygote. b.
</span>