Step 1: Reading the Word Group:
The three given words are Expedite, Hasten and Hurry. If we think of them on a simple scale of speed, all three sit on the fast end, meaning to make something occur more quickly or without delay. Our task is to find a fourth word from the options that also sits on this fast end of the scale.
Step 2: A Contrast Based Method:
Instead of only checking which word fits, it also helps to identify which words clearly do not fit because they mean the opposite or are unrelated in meaning, and eliminate them first before confirming the remaining word.
Step 3: Detailed Explanation:
Retard sits at the opposite end of the speed scale since it means to slow down or delay, so option (B) is eliminated immediately as it contradicts the group.
Provide belongs to a completely different category of meaning, connected with supplying or giving something, and has no link to speed at all, so option (C) is eliminated.
Disable is about removing the ability of something to function, again unconnected to speed or urgency, so option (D) is eliminated as well.
Once (B), (C) and (D) are ruled out, only Accelerate remains, and checking its meaning independently confirms that it means to increase speed or make something happen sooner, which places it firmly on the same end of the scale as Expedite, Hasten and Hurry.
Final Answer:
By elimination and direct meaning check, Accelerate is confirmed as the word similar in meaning to the given set.
$\boxed{\text{Accelerate}}$