Question

The following sentence uses which principal part of the verb?

He has chosen to sit in the front of the bus.

present

past participle

past

present participle

Answer 1

The following sentence uses past participle of the verb to choose - the word chosen is past participle of the verb to choose, and along with the auxiliary verb has it makes the tense present perfect.
Present would be - choose/chooses.
Past would be - chose.
Present participle would be - choosing.