Answer:
(D) meters
Explanation:
In order to measure the depth of the lake, it should be measured in meters.
Because, liters used to measure the amount of water and not the depth of the lake. Similarly, miles and grams are too big and small respectively in order to find the depth of the lake as miles are used for measuring big depth and the grams are used for measuring the weight of the thing.
Therefore, meters is used in order to find the depth of the lake.