When considering the different types of enzymatic regulation, which method do you think is best?

When considering the different types of enzymatic regulation, which method do you think is best?(Constitutive enzyme, Regulated enzyme, Competitive inhibition, Noncompetitive inhibition, Enzymerepression, or Enzyme induction)– Why this one?
When considering the three major catabolic pathways (Aerobic respiration, Anaerobic respiration, andFermentation), certain bacteria can utilize all three, while humans primarily use aerobic respiration.-If you were able to switch to use one of the other two pathways, which would you prefer?-Why this one?