It can be a valid choice to not choose or implement any solution.
a. true
b. false

The correct answer is true.

It is true that it could be a valid choice to not choose or implement a solution.

When you are trying to make a decision, there are times when not choosing is a valid option. Why? Because depending on the situation or difficulty of the moment, you need to wait a little bit more in order to better understand the causes and effects or the circumstances that surround the problem. You have to be very careful about not deciding abruptly. Or maybe you need to wait until you have more o better information to make a good decision.