Answer:
Option B is correct, i.e. Quadrilateral Trapezoid.
Explanation:
A "set" is group of all elements which have some special relationship among them like set of Natural numbers (N), set of Real Numbers (R), set of Integers (Z) etc.
A "subset" is group of some elements which are part of some another larger set like Natural numbers (N) is subset of Real numbers (R), i.e. N ⊆ R.
In other words, "SET" behaves like a Big Family, and "SUBSET" behaves like a group of family members which are part of its Big Family.
Checking the given options:-
1. Triangle and Square are different.
2. Rhombus and Rectangle are different.
3. Parallelogram and Triangle are different.
But option B, i.e. Trapezoid is a family member of Quadrilateral Family.
Hence, option B is correct, i.e. Quadrilateral Trapezoid.