Answer:
b. 17%
Explanation:
Let's begin by stating that the human genome possesses around 3,000 millions of base pairs.
Therefore, if this retrotransposon is around 1,000 base pair and possesses 516,000 copies, it will produce 516,000,000 of base pairs overall.
Let's consider,
516 millions
--------------------- × 100
3000 millions
= 17.2% (approximately 17%)
it gives us a percentage of the human genome which is for this transposon.