Answer:
D. priming
Step-by-step explanation:
Priming -
It is the process by which some external stimulus , like the image , person , word , changes the response of the person , is referred to as priming .
This process takes place , specially during the stage of decision making , when some factors alters the decision of the person .
Hence , from the given scenario of the question ,
Price of T shirt alters the decision of Joanna .
The correct option is D. priming .