Operons afford the organism the opportunity to
simultaneously regulate transcription of multiple genes, whose products are
active in the same process. Operons lead to the synthesis of groups of functionally
related enzymes, usually from a single mRNA transcript hence makes regulation of
the genes highly efficient.
OBSERVATIONAL LEARNING is associated with the fearless peer experiment. The experiment demonstrates OBSERVING OTHERS AND POSITIVE BEHAVIORS.
Fearless peer experiment is about a video show about a small boy who was having fun playing with dogs. What was seen inside the video encourages the watchers to lose the fear they have for strange dogs.
Answer: A.They contain plants that purify water.