The Jama Masjid in Kashmir, completed by Zain-ul-Abidin, incorporates multiple architectural styles.

Option 1 suggests that the only striking feature is its turret. While it`s true that the mosque does have a turret, this isn`t its only distinctive feature.

Option 2 suggests that the Jama Masjid has a turret, shares similarities with Buddhist pagodas, and showcases Persian style architecture. This correctly reflects the mosque`s unique amalgamation of architectural elements.

Option 3 indicates that the mosque has similarities with Buddhist pagodas and Persian style, but this option omits the turret feature, which is a significant part of the structure.

Option 4 says the mosque has a turret and Persian style, but this option neglects the similarity with Buddhist pagodas, an important aspect of its design.

Hence, option 2 is correct as it incorporates all distinctive features: turret, similarity with Buddhist pagodas, and Persian style.