I think it was nearly 20 years.
<em>Answer:</em>
<em>A) abstract ideas. </em><em> </em>
<em>Explanation:</em>
<em><u>Abstract ideas,</u></em><em> in psychology, is determined as ideas that are not being connected with "worldly things", and is considered as something that an individual can't touch yet can feel. However, it signifies thoughts that are considered as conceptual & symbolic but not specific or concrete. It is entirely based on the relationship between objects and ideas, principles, and concepts.</em>
<em><u>The correct answer to the question is abstract ideas.</u></em>
