The correct option is D 4
The highest of the degrees of all the terms of an expression is called the degree of the expression.
In the expression, xy+x2y−x2y2, the degree of the term xy is 2,
the degree of the term x2y is 3,
the degree of the term (−x2y2) is 4.
As the highest degree is 4, so the degree of algebraic expression is 4.