ANS:A - alluvial

Alluvial - Transported by the river.
Marine - deposited by Sea.
Lacustrine - deposited by the lake.

There is some kind of difference between transportation and deposition, so the correct answer should be an option (a) Alluvial is soil deposited by the river.

Marine is soil deposited by Sea/Ocean.

Lacustrine is soil deposited by lakes.

Loess is soil deposited by air or wind.