Knowledge and Practice Examination for Effective Reading Instruction (KPEERI) Practice Test

The suffixes -ed, -ing, -en, -fy, -ate, and -ize are closely associated with verbs, which is why the answer is correct. Each of these suffixes serves a specific function in transforming a base word into a form that indicates an action, process, or state.

For example, the suffix -ed often indicates the past tense of regular verbs (like "walked" from "walk"), while -ing is used to form present participles (such as "running" from "run"). The suffix -en can turn adjectives into verbs (as in "hasten" from "hasty"), and -fy transforms nouns or adjectives into verbs, meaning "to make or to cause" (for instance, "beautify" from "beauty"). The suffixes -ate and -ize also create verbs from nouns or adjectives, conveying the idea of causing a state or action (such as "activate" from "active" and "organize" from "organ").

Understanding these suffixes helps to identify the verbal nature of the resulting words, making it clear why they are all categorized under verbs. This connection between the suffixes and their function in forming action-oriented words is pivotal in the study of