Take a look at the sentence again:
Latoya would have swum farther, but a cramp
stang her side, so she
rode a wave into shore and spent the afternoon
watching handsome young men parading on the beach.
The second verb, stang, is the problem. The sentence requires the simple past. Stung is the correctly spelled form.
Verb | Simple Present | Simple Past | Past Participle |
sting | sting(s) | stung | stung |
Would have swum, the verb you chose, is perfectly correct. Before you continue, review the rules for irregular verbs.
Go back to the sentence to try again.