| Word | Past Participle | Code |
| WEAR | WEARING | 1 |
| WEAR | WEAR | 2 |
| WEAR | WORN | 3 |
| WEAR | WEARED | 4 |
An alternative way to confirm this answer is to place "wear" alongside a few other common irregular verbs and compare their three forms side by side.
Irregular verbs like "wear," "speak," and "break" do not add "-ed" for their past participle; instead they change internally: wear becomes wore then worn, speak becomes spoke then spoken, and break becomes broke then broken.
Checking each code against this pattern: Code 1 pairs wear with wearing, which is the present participle used for continuous tenses, not the past participle. Code 2 pairs wear with wear, leaving the base form unchanged, which is not how this irregular verb behaves. Code 3 pairs wear with worn, matching the irregular past participle exactly, the same way speak matches spoken. Code 4 pairs wear with weared, which would only be correct if wear were a regular verb, but it is irregular.
Only Code 3 gives the correct irregular past participle form.
Hence, the correct answer is \[ \boxed{\text{Code 3}} \].