Answer:
d) problem-solving
Step-by-step explanation:
Problem solving basically aims at searching a solution for the problem, and working on it. In the given instance the Company Toyota faces a big problem and then it creates a team of employees immediately to counter face the problem and thus, find a solution.
It is a problem solving technique and step from the company's side.
As the employees start brain storming to find the exact problem and its solution, it is a problem solving method.