If he _____ the instructions, he would have completed the task on time.

Had followed

Follows

Followed

None of these

If he had followed the instructions, he would have completed the task on time.

اگر وہ ہدایات پر عمل کرتا تو وقت پر کام مکمل کر لیتا۔

This is used in a third conditional sentence to express a hypothetical situation in the past that did not happen.