Can some one help me answer this bio question?

Question

According to the operon hypothesis of Jacob Monod, lactose controls the expression of the genes for lactose metabolism at the level of

a) transcription
b) processing of the transcript
c) translation
d) post-translational modification

Answer 1

a) transcription

Much of the control of gene expression occurs at the transcriptional level

Answer 2

a), lactose interacts with a repressor of the lac operon, allowing a polymerase to transcribe the genes