Take another look at the sentence:

Giselle dreaded attending her US Government class. Whenever Dr. Duncan called on her, Giselle felt as if she had __________ in her chair; she couldn't open her mouth, let alone answer one of his questions.

The sentence requires the past participle of freeze, an irregular verb. Frozen is the past participle.

Verb Simple Present Simple Past Past Participle
freeze freeze(s) froze frozen

Freezed, the form you chose, is a spelling error. Before you continue, review the rules for irregular verbs.

Go back to the sentence to try again.

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