Salem sent constables to arrest a former minister, george burroughs, because they accused him of being a wizard. a. complex sentence b. compound sentence c. compound-complex sentence d. simple sentence

Ithink the answer would be b.
but im not 100% sure

Okay, biology isn't exactly my strongest subject (it never has been), but i'm pretty sure the answer is nucleotides. dna is made up of nucleotides. each nucleotide contains a phosphate group, a sugar group, and a nitrogen base. there are four different nitrogen bases: adenine (a), thymine (t), guanine (g), and cytosine (c). a always pairs with t, and g always pairs with c.

Then what do i do after i read the excerpt? i’m not really understanding the question here.