Jumped
The past participle of the word "jump" is "jumped."
Jumped is already the past participle of jump.
In past participle, the rule is to add "had" then the past participle of the verb. Since the past tense and the past participle of jump is the same (jumped), then it should be "had jumped".
The past participle of the word "pick" is "picked".
The past participle of the word "have" is "had."
The past participle tense of jump is "jumped."
The word "it" does not have a past participle as it is a pronoun. It is only verbs that have a past participle.
The past participle of the verb to have is had.
The past participle of the word "do" is "done."
The past participle of the word "Find" is the word "Found."
The past participle of the word graduate is graduated
The word "invited" is the past participle of invite.