Answer:
K is the best estimate.
Explanation:
This is just common sense, not much math.
J: No, that is smaller than an essential oils bottle, which is as tall as a finger.
K: Probably, the range is from the size of a medicine bottle to a small/medium water bottle.
L: No, that much is the size of a bottle of detergent.
M: No, that much water is 6 kg.