Which option has a polynomial of total degree (7)?

Correct answer: \(x^4y^3+2x\)

In \(x^4y^3+2x\), the term \(x^4y^3\) has total degree \(4+3=7\). The other term, \(2x\), has degree 1, so the greatest total degree in the polynomial is 7. Hence, option B is correct. In option A, the greatest total degree is only \(2+3=5\). Exam tip: For a multivariable term, add the exponents of all variables; the largest such sum gives the total degree of the polynomial.