Whose cat will be the fastest and most obedient (in the case below)?

Understanding a problem requires that you distribute it into different sections and then attempt to figure out the solution. In this case, Amy’s cat is the smallest according to the statement. Then Fiona and Wendy have cats that are of similar size but larger than Amy’s. After that comes Jordan’s cat which is bigger than Amy’s, bigger than Wendy and Fiona’s cat but smaller than Jenna’s.

This leaves only Jenna’s cat to be the largest. The question asks for the fastest and the most obedient cat which is the biggest and the smallest respectively. Hence, Jenna’s cat is the fastest as it is the largest and Amy’s cat is the most obedient as it is the smallest.