Here's why:
* Past Participle: This form of a verb is used to create perfect tenses (e.g., present perfect, past perfect) and passive voice.
* Irregular Verb: "Run" is an irregular verb, meaning its past participle doesn't follow the usual "-ed" pattern.
Here are some examples of how "run" is used as a past participle:
* Present Perfect: I have run a marathon.
* Past Perfect: She had run the race before.
* Passive Voice: The company is run by a team of experienced professionals.