I believe its, Suppressing a fire at the early stages.
I think it is a structure of:dim is light where the radial muscles of the iris contract
Circular muscles of the iris relax
Pupil dialates
More light enter the pupil
I think its B. Helping the plant convert necessary oxygen for use.
Answer:
Peanut Butter
Explanation:
It is irresistible to dogs
I hope this helped ;)