I would be grateful if you could respond w_____ two days.

I would be grateful if you could respond w_____ two days.

• A. In
• B. Within
• C. Around
• D. Over

Answer: (B)

The key idea is how to express a deadline in a request. Using within two days signals that you’re asking for a reply by the end of the two‑day period, i.e., not later than two days from now. It sets a clear cutoff for the response. In contrast, in two days would suggest the action is expected to occur exactly at that time or emphasizes timing from now, which can feel less flexible for a reply. Around two days implies an approximate window, not a firm deadline. Over two days suggests more than two days, which misses the intended deadline. So, within two days is the natural choice to request a timely response.

The key idea is how to express a deadline in a request. Using within two days signals that you’re asking for a reply by the end of the two‑day period, i.e., not later than two days from now. It sets a clear cutoff for the response.

In contrast, in two days would suggest the action is expected to occur exactly at that time or emphasizes timing from now, which can feel less flexible for a reply. Around two days implies an approximate window, not a firm deadline. Over two days suggests more than two days, which misses the intended deadline.

So, within two days is the natural choice to request a timely response.