If a cat's mass is 1.20 kg, what is its weight on earth? a. 11.9 b. 12.1 c. 12.2 d. 11.8

Weight is a force. As such it is determined by the Newton's second law of motion: Force = mass x acceleration.

When referring to weight the acceleration is equal the gravity constant (g=9.8m/s^2).

Hence, the weight of a mass of 1.20kg on Earth is:
W = 1.20 x 9.8 = 11.8

Correct (d)

3 - aquifers are permeable rock so they contain groundwater