The five$-$step decision$-$making process includes:

A$.(1)$ Research and development, $(2)$ Production, $(3)$ Marketing, $(4)$ Distribution, and $(5)$ Customer service.

B$.(1)$ Research and development, $(2)$ Making decisions by choosing among alternatives, $(3)$ Production, $(4)$ Distribution, and $(5)$ Customer service.

C$.(1)$ Identifying the problem and uncertainties, $(2)$ Research and development, $(3)$ Making decisions by choosing among alternatives, and $(4)$ Implementing the decision, evaluating performance and learning, and $(5)$ Customer service.

D$.(1)$ Identifying the problem and uncertainties, $(2)$ Obtaining information, $(3)$ Making predictions about the future, $(4)$ Making decisions by choosing among alternatives, and $(5)$ Implementing the decision, evaluating performance and learning.