It seems like the fractions in the expression you've provided are missing. To accurately match one of the situations to the expression, I would need to know what the specific fractions are that you are referring to.
However, I can help by analyzing the situations given:
A. This situation is about Mrs. Carter using a specific weight of butter, which suggests a subtraction operation based on weight (subtracting the amount used from the total).
B. Chris biking for two separate periods suggests an addition operation (adding the two biking times together).
C. Tony mowing his lawn reflects a situation where he has already spent time mowing, but needs to determine how much longer it will take. This again suggests subtraction, as it would involve determining the difference between the total time and the time already spent.
D. Susan poured a specific amount of orange juice into a jar from a total amount she had, which also suggests a subtraction operation (subtracting the amount poured from the total amount).
Based on this analysis, if your expression involves performing an addition operation, then situation B would be the correct match. If the expression involves subtraction, then you would need to consider A, C, or D depending on the context of the expression. If you can provide the specific fractions, I can help further in matching them to the correct situation.