Take another look at the sentence:
When Henry opened the vegetable crisper at the bottom of the refrigerator, the puddle of rotting lettuce that he discovered __________ up the kitchen for the rest of the day.
The sentence requires the past tense of stink, an irregular verb. Stank is one of two simple past forms.
|Verb||Simple Present||Simple Past||Past Participle|
|stink||stink(s)||stank or stunk||stunk|
Stinked, the form you chose, is a spelling error. Before you continue, review the rules for irregular verbs.