20.
Your Answer is
Correct Answer is G
Explanation
Before the comma is a complete sentence, after the comma is a present participle as an adverbial, indicating that Dad's state when speaking is "kneeling so I can see clearly...".
Item F: There are two complete sentences before and after the comma, which is wrong.
Item H: There is already a verb in the sentence, so started is wrong.
J item: and has no parallel content, error.