In research, a concept, which is a thought or notion that is more challenging to measure, is termed a(n) :

A) Construct
B) Variable
C) Element
D) Group

A construct is an abstract concept that is specifically chosen for investigation, often complex and not directly observable, making it challenging to measure. Constructs are fundamental in theoretical frameworks in research, representing phenomena that researchers aim to study, quantify, or understand through operational definitions and measurements.