The correct answer is C. offspring.
Posterity is a word that refers to future generations. In the context of the sentence, “Our posterity shall hold us responsible for the devastation caused by cutting of trees,” the speaker is saying that future generations will hold us
accountable for the damage we are doing to the environment.The other options are not correct because they do not refer to future generations. A predecessor is someone who comes before someone else in a position or office. A successor is someone who comes after someone else in a position or office. Followers are people who support or admire someone.
It is important to take care of the environment for the sake of future generations. We need to protect our forests and other natural resources so that they can continue to provide us with the benefits that we need.