Answer:
The correct option is C) Thymine
Explanation:
The model of the DNA is made up of two strands of DNA which are complementary to each other. The sugars and phosphates make up the back bone of the DNA and the nucleotides make up the inner parts which are joined through hydrogen bonds. Adenine pairs with thymine. Cytosine pairs with Guanine.
As the nucleotide present at location 2 is adenine, hence thymine will be the base which will pair with it.