Jarod used to think that all vegetables were green. then one day, he had some beets, which are red. this led to an adjustment in an existing schema, in the process known as:
a. concept flexibility
b. assimilation
c. concept resolution
d. accomendation

The answer is concept flexibility. The change in views enters the schema after experiencing a different solution that may add to the understanding of things. Jarod displayed this after he discovered that his knowledge is not a fixed answer.  

Same with other concepts, there are instances where additional information are needed to be absorbed to correct previous schemas.