Question

Given the following sets.

Answer 1

That's the uniion of sets  B and C
that means inclde all the values of both sets (not meaning the ones common to both sets)


so that would include a,b,c,d, 0,a,2,b
a and b repeat so list them only once


that would be {a,b,c,d,0,2}
answer is 4th option