Choose the incorrect part (A,B,C,D) in the following: Malnutrition is a major cause of human suffering in those countries where the production of rice have been impeded by frequent drought.

Identify the one underlined word or phrase (A,B,C,D) that must be changed in order for the sentence to be correct.

To become Psychology mature, one has to develop an individual way of life distinguished from a mere identification with collective standards.

Identify the underlined part of the sentence that requires correction: If it receives enough rain at the proper time, hay will grow quickly as grass.

The new technique calls for heating the mixture before apply it to the workplace. Which underlined verb is not correctly used?