Question

2. Which of the following is a desirable change?
(a) The rotting of an egg
(C) The digestion of food
(b) The spoiling of food
(d) The rusting of iron​

Answer 1

Desirable changes are those that are beneficial[useful]. Milk changing into curd,a seed germinating and forming a new plant and bees changing nectar into honey are some examples of desirable change. Undesirable changes are those that are not

Answer 2

C

Explanation:

Because the digestion of food is useful for us.