In the problem solving process, the final step is to try to
a. generate multiple solutions
b. review your results
c. decide on a solution
d. evaluate your choices

In the problem solving process, the final step is to try to B. review your results. You need to do this step so as to check whether your results are correct and whether they allign with what the problem proposed.if you don't review your results, you may make a mistake that will be too late to fix unless you check everything beforehand. SO this is an important step that shouldn't be skipped when it comes to solving problems.

“exterior angles of triangles. an exterior (or external) angle is the angle between one side of a triangle and the extension of an adjacent side. try this drag the orange dots on any vertex to reshape the triangle.” look to get to the answer i explained what it means and other things i hope it you .