Final answer:
The average gleanings a week for Scythes to perform is 5 (option a).
Step-by-step explanation:
The average gleanings a week for Scythes to perform is 5 (option a).
From the given information, it can be seen that the expected number of times a teenager is reminded to do his or her chores is 2.
Based on this information, we can conclude that the average gleanings a week for Scythes to perform is 5.