Answer:
{}, {e}, {d} and {e, d}
Explanation
Given the set {e, d}
The subsets are the set of elements that can be founds in the set written as s a single set.
Given thet n(S) = 2
Power of the set P(S) = 2^2
Power of the set P(S) = 4
This shws that there will be 4 subsets and this are;
{}, {e}, {d} and {e, d}
Hence the subsets are {}, {e}, {d} and {e, d}