Step 1: Understanding the Concept:
The question gives three words, expedite, hasten and hurry, and asks for a fourth word that means the same thing. All three describe doing something quickly or making it happen sooner.
Step 2: Key Formula or Approach:
Check each option against this shared sense of speed. A true synonym must also mean "to make faster" or "to rush," not the opposite and not something unrelated.
Step 3: Detailed Explanation:
"Retard" means to delay or slow down, which is the reverse of hurrying, so it is ruled out. "Provide" means to give or supply, which has no link to speed. "Disable" means to stop something from functioning, again unrelated to speed. "Accelerate" means to speed up or move faster, matching expedite, hasten and hurry exactly.
Step 4: Final Answer:
The word that fits is "accelerate," so the correct choice is option (A).