Option 1: Expedite -> means to speed up or accelerate a process, which is the opposite of procrastinate.
Option 2: Discuss -> means to talk about or examine a topic, unrelated to delaying actions.
Option 3: Defer -> means to postpone or delay something to a later time, which is a synonym of procrastinate.
Option 4: Elevate -> means to raise or lift something to a higher position, unrelated to procrastinate.
Hence, Option 3: Defer -> Procrastinate means to delay or put off doing something, and defer carries the same meaning of postponing an action or decision to a later time -> correct