Read the following context and choose the best option to answer the question.
Context: Apparently , I do n't truly LOVE my food . The article made me think about an experiment we did in my college gen - ed Psychology class . We were each given a Hershey 's Kiss , and instructed to let it melt in our mouths - no chewing . This experiment made me realize just how yummy those kisses are !
Question: what is the reason letting a Hershey 's Kiss melt in your mouth makes it yummy ?
Options: 
- It is a stunt for the company .
 - It makes you pay extra for the chocolate
 - It is a sort of punishment
 - The flavor stays a long time and is sweet .


The flavor stays a long time and is sweet .