Answer:
Fredrick methodically organized his cards.
Step-by-step explanation:
Relentlessly refers to doing something in an intense or harsh way. It could be an option, but there is not much in the passage to say Fredrick organized the cards relentlessly. His action is not described in any way that makes it seem harsh or intense.
Incorrectly refers to doing something the wrong way. There is no indication that Fredrick misplaced a card or did anything wrong while sorting them. This is not an option as well.
Alphabetically would mean he used the way the letters are ordered in the alphabet to organize the cards. However, we know he did not. Fredrick organized them by team and year. This is also not an option.
Finally, methodically refers to doing something systematically, in an orderly manner. As we can see, Fredrick did have a method to organize the cards. He sorted them according to certain standards. Therefore, this is the correct option to fill in the blank.