Which of the following medications is indicated for BPH and does not require titration?

Alfuzosin is the correct choice as it is specifically designed for the treatment of benign prostatic hyperplasia (BPH) and does not require dose titration. It is an alpha-1 adrenergic blocker that helps to relax the muscles in the prostate and bladder neck, making it easier to urinate.

Unlike some other medications listed, alfuzosin has a once-daily dosing regimen and is formulated to provide a consistent therapeutic effect without the need for adjustments. This characteristic makes it convenient for patients who may have difficulty with adherence to a more complicated dosing schedule.

In contrast, terazosin and prazosin typically require titration to minimize side effects such as hypotension, as these medications can significantly affect blood pressure and may cause dizziness upon initiation. Clonidine, while it has additional uses, is primarily an antihypertensive drug and not indicated specifically for BPH, nor does it address the condition in the same way as alfuzosin. Thus, the ease of use and specific design of alfuzosin for BPH treatment make it the appropriate choice in this scenario.