The is the maximum drug effect, regardless of dose. a. cumulative effect b. metabolism c. threshold d. plateau effect

d. plateau effect

Explanation:

The plateau effect is a reaction of adaptation of our body to a stimulus, causing the effect of this stimulus to "park" at its greatest strength, ie the plateau effect explains why a drug can reach its maximum effect regardless of the dose taken. This is because our body gets used to the new condition (in this case, the effect of the medicine) that has been imposed and now reacts quickly and extremely susceptibly to this condition.

the way that the mass of carbon can be conserved through cellular respiration is through a process/law called the law of conservation of mass which even tho it undergoes a process, mass is not be destroyed or changed