Which one of the following strands of dna is the complement strand to
c-c-a-t-c-g?
a. a-a-c-g-a-t
b. g-g-t-a-g-c
c. g-g-a-t-g-c
d. t-t-g-c-t-a

The correct answer is B. G-G-T-A-G-C. That is because it says complement and complement in this sense means opposite since the compounds connect to other compounds and if guanine always connects with cytosine and thymine always connects to adenine, then just see what would be the opposite to what is provided.