Few teachers have been spared the problem of an obstreperous pupil in the class.

The correct answer is C. unruly.

An unruly pupil is one who is difficult to control or manage. They may be disruptive in class, refuse to follow instructions, or be disrespectful to teachers and other students. Unruly pupils can make

The other options are incorrect because they do not accurately describe an unruly pupil.

Awkward pupils may be shy or timid, but they are not necessarily difficult to control. Lazy pupils may not be motivated to learn, but they are not necessarily disruptive. Sullen pupils may be unhappy or angry, but they are not necessarily difficult to control.

It is important to note that not all unruly pupils are bad or difficult children. Some unruly pupils may simply be struggling in school or dealing with difficult personal issues. It is important for teachers to be understanding and patient with unruly pupils, and to try to help them succeed in school.