Answer:
4th Option is correct that is constant term is given expression is 17.
Explanation:
Given Algebraic Expression =

We need to find Constant term in the given algebraic expression.
We know that Constant term in the Expression are term which has only numbers not a variable.
So, In given expression
are not constant terms as all terms has variables.
Only 17 is constant term.
Therefore, 4th Option is correct that is constant term is given expression is 17.