Option 1: This statement is correct because gulfs with narrow fronts and wider rears allow for significant tidal amplification, resulting in high tides. The shape of the gulf causes the water to concentrate as it flows in, which raises the tide.

Option 2: This statement is also correct. Tidal currents are created when the flow of water is restricted by a narrow channel, such as the connection between a gulf and the open sea. The restriction causes the water to speed up, resulting in a strong current.

Option 3: This statement is right as well. A tidal bore occurs when a large tide travels up a river or narrow bay against the direction of the river’s current. This typically happens in areas with a big tidal range and where incoming tides are funneled into a shallow, narrowing body of water, such as a river.

Option 4: The provided answer indicates this statement is incorrect. The tidal nature of the Hooghly river can indeed be important for Kolkata as a port. However, the specifics of this impact could vary and might not always be deemed as crucial. It mainly aids in navigation and handling of the ships at port. So, this statement could be considered partially correct depending on the exact context.