Final answer:
Appendix D provides answers for Calculus Early Transcendentals is D) Vector calculus
Step-by-step explanation:
In Calculus Early Transcendentals, Appendix D typically provides answers for problems related to vector calculus. Vector calculus involves the study of vector fields, line integrals, surface integrals, and other concepts that extend the principles of calculus to higher dimensions. Therefore, the answers in Appendix D would likely pertain to exercises and problems related to vector calculus rather than differential equations (A), integral calculus (B), or series and sequences (C).
So the answer is D.