Correct Answer: expedite

Solution : The correct choice is the first option.

The term impede implies hindering or slowing down progress, while its antonym expedite denotes speeding up or facilitating a process. In grammatical terms, "expedite" serves as the direct opposite, indicating the removal of obstacles or acceleration of an action.

The meanings of the other options are as follows:

• Disrupt : This term means to disturb or interrupt.
• Block : This term involves creating obstacles rather than removing them.
• Delay : This term signifies the act of slowing down or postponing.

Therefore, the correct antonym is expedite.