A bog is a type of wetland with witch of the following a. stagnant water
c. warm, slow-moving water
b. only dead plants
d. still, acidic water

Still acidic water

Explanation:

A bog or bogland is a wetland that accumulates peat, a deposit of dead plant material—often mosses, and in a majority of cases, sphagnum moss. It is one of the four main types of wetlands. Other names for bogs include mire, mosses, quagmire, and muskeg; alkaline mires are called fens.

i believe the answer would be b. hope it : )

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