Directions: In the question below, the first and the last (correctly ordered) sentences are numbered 1 and 6, respectively. The rest of the passage is split into four parts and named P, Q, R and S. These four parts are not given in the proper order. Choose the correct combination from the four alternatives given.

1. When the egg hatches, the caterpillar will start its work and eat the leaf it was born onto. P. Each caterpillar type likes only certain types of leaves. Q. Since it is tiny and cannot travel to a new plant, the caterpillar needs to hatch on the kind of leaf it wants to eat. R. When it starts eating, it instantly starts growing and expanding. S. The mother butterfly needs to lay her eggs on the type of leaf the caterpillar will eat.
2. The skin of a caterpillar does not stretch or grow, so it grows by shedding the outgrown skin several times while growing.