Answer:
The correct answer is past participle.
Step-by-step explanation:
All the participle clauses are tools used to shorten the information.
There are three types of participle clauses: present participles, past participles and perfect participles.
In this case we are using a past participle.
The past participle generally fulfill the function of the liabilities. Its use can be to add information, or to give a reason to the verb that has the sentence.
The past participle of regular verbs is formed with the ending -ed.
Let's look at examples of the other participles so that there is no doubt that the correct answer is past participle:
Present participle: verbs ending with -ing: watching, leaving, cooking.
Perfect participle: formed with "having + past participle": having watched, having cooked.