Final answer:
The average mass of citric acid in a 2-liter bottle of 7-Up cannot be determined with the information provided, as the concentration of citric acid in 7-Up is required for this calculation.
The option (d) is correct.
Step-by-step explanation:
The question you've posed is seeking the average mass of citric acid in a 2-liter bottle of 7-Up. The information provided doesn't directly answer your question but emphasizes the importance of citing units when dealing with measurements which allows for clear and safe communication, particularly in chemistry and medicine, where confusion over units can have serious repercussions.
To find the mass of citric acid in a 2-liter bottle of 7-Up, we would need the concentration of citric acid in grams per liter (g/L) for 7-Up, which is not provided here. Without that specific information, we cannot accurately determine which of the choices (d) is correct.