Take a look at the sentence again:
Jim's last temper tantrum __________ $200. He had thrown an expensive titanium
three-wood into the golf course lake, and his wife Nancy insisted that he
hire a scuba diver to retrieve it.
The sentence requires the past tense of cost, an irregular verb that never changes form. Cost, then, is the simple past form.
| Verb | Simple Present | Simple Past | Past Participle |
| cost | cost(s) | cost | cost |
Costed, 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.