Question

during which stage does rna polymerase synthesize a complementary rna molecule?
termination
elongation
initation

Explanation:

In the process of transcription (synthesis of RNA from DNA), the elongation stage is when RNA polymerase adds nucleotides to form a complementary RNA strand. Initiation is the start of transcription (binding to promoter), and termination is the end (releasing the RNA). So RNA polymerase synthesizes the complementary RNA during elongation.

Answer:

B. elongation (assuming the options are labeled as A: termination, B: elongation, C: initation; correcting the typo "initation" to "initiation" for clarity, but the correct stage is elongation)