Answer:
For Marnie to know how much vitamin A she should take, she should be informed by the Upper Limit (UL) DRI.
Step-by-step explanation:
- UL is the highest possible, safe intake of a certain nutrient in a day.
- It outlines the highest amount of nutrients an individual should take without possibly causing harm to their health.
- Marnie can be therefore be directed by the guide of the Upper Limit (UL), on the amount of vitamin A she can take without causing effect to her unborn baby.