Understanding Prefixes for Vocabulary Building

The question asks us to complete the sentence "Students have a tendency to ____behave during exams." by selecting the correct prefix from the given options. Prefixes are letters or groups of letters added to the beginning of a word to change its meaning.

Analyzing the Base Word and Context

The base word here is "behave," which means to act in a particular way. The sentence describes a tendency of students during exams, implying a certain type of behavior.

Evaluating the Prefix Options

Let's look at the meaning of each prefix and how it combines with "behave":

• mis-: This prefix often means 'wrongly' or 'badly'. When added to "behave", it forms "misbehave", which means to behave badly or improperly. This fits the context of students acting in an undesirable way during exams.
• un-: This prefix usually means 'not' or reverses the action of the word. While "un-" is common, "unbehave" is not a standard English word used to describe behaving badly.
• non-: This prefix typically means 'not' or 'lack of'. "Nonbehave" is not a standard English word.
• dis-: This prefix can mean 'not', 'opposite of', or 'apart'. While "dis-" forms many words, "disbehave" is not a standard English word commonly used in this context.

Choosing the Correct Prefix

Considering the meanings and common usage of these prefixes, "mis-" is the correct prefix to use with "behave" to indicate behaving badly or improperly. The word "misbehave" perfectly fits the sentence to describe students acting inappropriately during exams.

Therefore, the completed sentence is: Students have a tendency to misbehave during exams.