Choosing the Correct Prefix for Maturity

The question asks us to select the appropriate prefix to complete the sentence: "One’s ____maturity shows up when one begins to speak unintelligibly with others about serious issues."

The sentence describes a behavior (speaking unintelligibly about serious issues) that indicates a lack of proper behavior or understanding in a serious situation. This behavior is typically associated with the opposite of maturity.

Understanding Prefixes

Prefixes are letters or groups of letters added to the beginning of a word to change its meaning or create a new word. Several prefixes indicate the opposite or lack of something. Let's look at the options provided:

• de-: Often means 'remove' or 'reverse'. Examples: deactivate, decode.
• un-: Often means 'not' or 'opposite of'. Examples: unhappy, unpack.
• non-: Often means 'not' or 'lack of'. Examples: non-essential, non-fiction.
• im-: Often means 'not' or 'opposite of'. It is commonly used before words starting with 'm', 'p', or 'b'. Examples: impossible, impatient, imbalance.

Analyzing the Sentence and Options

We need a word formed by adding a prefix to 'maturity' that fits the context of the sentence. The behavior described (speaking unintelligibly about serious issues) strongly suggests a lack of maturity.

• de-maturity: Not a standard English word.
• un-maturity: Not a standard English word. While 'un-' means 'not', it's not the prefix used with 'maturity'.
• non-maturity: While 'non-' can indicate 'lack of', the word 'non-maturity' is not commonly used to describe a person's state of being.
• im-maturity: This forms the word 'immaturity', which is a standard English word meaning the state of being immature, i.e., lacking full maturity. The prefix 'im-' is correctly used with 'maturity' because 'maturity' starts with 'm'.

The word 'immaturity' perfectly fits the sentence: "One’s immaturity shows up when one begins to speak unintelligibly with others about serious issues." Speaking unintelligibly in serious discussions is a sign of immaturity.

Therefore, the appropriate prefix is im-.