Makes the water movement of the tide in a narrow strip of coastal land seem extreme

The correct answer is this one: tidal bore. Tidal Bore makes the water movement of the tide in a narrow strip of coastal land seem extreme. Tidal bore is a tidal phenomenon in which the leading edge of the incoming tide forms a wave (or waves) of water that travels up a river or narrow bay against the direction of the river or bay's current.

Answer glacier terminus;

Answer (b) they're often rural migrants with no title to housing or rights to established businesses