Take a look at the sentence again:
Mauricio would have _________ the seven-foot wave into shore if a huge shark
had not been patrolling the waters underneath the surfboard, hoping for
a dangling arm or leg.
The sentence requires the past participle of ride, an irregular verb. Ridden is the past participle form.
| Verb | Simple Present | Simple Past | Past Participle |
| ride | ride(s) | rode | ridden |
Rided, the form you chose, is a spelling error. Before you continue, review the rules for irregular verbs.
Try again to escape Grammar Hell!