Alex is dealing with a new problem that he has never encountered.He begins to consider all the various methods that he has used to solve problems in the past.What is Alex thinking about,according to Newell and Simon

A)  the mental set 
B)  the problem space 
C)  heuristics 
D)  algorithm

Problem Space

The set of all possible states or configurations that a problem can take, considering the initial state, goal state, and all possible pathways to solve it.

Mental Set

is a cognitive framework or mindset that predisposes an individual to approach problems in a particular way based on past experiences.

Various Methods

Diverse techniques or procedures applied in different fields or activities, tailored to achieve specific goals.