aditya8062 wrote:
i will explain as why B is the answer and not A
the construction after comma in B is explaining ashow "food supplies were dwindling" and this is exactly what we want to express the further idea of the sentence
the construction in A gives a wrong interpretation .the modifier in A"comma + possibly a result from increasing" is explaining as how"creatures of the seabed were suffering" , a meaning that is not correct for we know the creatures weresuffering "because food supplies were dwindling"
...
