Let dequals{14,17,19}, eequals{14,16,17,18} and fequals{13,15,16,17,19}.
list the elements in the set d union e.

Step-by-step explanation:

Given the elements in sets,

{}

{}

{}

∪ is asked to be found.

Now it is clear that is unnecessary for this question.

∪=∩

∪={14,17,19}+{14,16,17,18}-{14,17}

∪={14,16,17,18,19}

b is the answer that makes most sense

step-by-step explanation:

heudhduxhdnshenebdutbbt

step-by-step explanation:

hrhhdhdbbrurb ees