Which of the following is one difference between gene regulation in prokaryotes and eukaryotes?

All eukaryotes use operons to organize their genes while prokaryotes do not.
Eukaryotes transcribe jeans in response to environmental stimuli while prokaryotes transcribed genes randomly.
Prokaryotes remove exons from mRNA before translation while eukaryotes translate, the entire sequence of mRNA.

Eukaryotes transcribe genes in response to environmental stimuli while prokaryotes transcribe genes randomly.