Which is the best way to write the sentence?
covered with ants, the guests at the picnic decided not to eat the pie.
the guests at the picnic, covered with ants, decided not to eat the pie.
the guests at the picnic decided not to eat the pie covered with ants.
covered with ants, the guests decided not to eat the pie at the picnic.

The guests at the picnic decided not to eat the pie covered with ants.

Explanation:

This is the best way to write the sentence because at first it is showing us the  a noun(the guests) which are decided(verb) to do something.

In the first sentence we can get a feeling like the guests are covered with ants and not the pie. Same works for the second and the last sentence.

The third sentence is one making the most sense.

c. nature verses humanity is correct