Mark the letter A, B, C or D to indicate the underlined part that needs correction in each of the following questions.

Yesterday, for the first time in his life, Mike refuses to follow his parents' advice.

Our group__________ a new method to carry out the survey into teenagers’ attitudes towards online learning.

Whenever you're planning to_______ a new product, it’s essential to provide excellent customer service.

Most of this growth had occurred since 1950 and was known as the population________.

Mark the letter A, B, C or D to indicate the word(s) CLOSEST in meaning to the underlined word(s) in each of the following questions.

It is not permissive for employers to discriminate on grounds of age, sex and race.

Don't let my mother watch any of those sad movies. She cries at the drop of a_________.