Kevin was a participant in a clinical study to determine how much niacin cures pellagra, the niacin deficiency disease. During the study, he consumed only a formula diet that was deficient in niacin. After developing pellagra, he was given 2 mg of niacin a day for 2 weeks, but he still suffered from the disease, so the scientists added 2 mg of the vitamin to Kevin's formula. By the beginning of the 5th week of the study, the researchers noticed that Kevin's signs and symptoms were greatly improved. At the end of the 5th week, he was feeling fine. The researchers concluded thata. Kevin's niacin requirement was about 4 mg a day.
b. the RDA for niacin should be 4 mg.
c. the AI for niacin should be 4 mg plus 60 mg as a margin of safety.
d. Kevin's daily value for niacin was 4 mg a day.

Label each individual response with its appropriate stage of grieving: denial, anger, bargaining, depression, or acceptance. 1. elizabeth’s father quietly meditates in his office. he knows his mother-in-law needs the extended care offered by the alzheimer’s care facility. in his mind he suggests giving up his three-cup-a-day coffee habit if the transition can just go smoothly. stage: 2. elizabeth’s mother is in the bathroom, getting ready to go to sunday dinner at her mother’s home. the problem is that her mother moved into the alzheimer’s care facility last thursday. stage:3. elizabeth’s brother has shut himself in his room. he and his grandmother talked every day until she moved into the care facility. when he’s reached her on the phone, she is disoriented. he hasn’t joined the family for dinner since she moved. stage: 4. elizabeth has gone to the gym. she’s going to take a kick-boxing class and then a cycling class. she is frustrated by what is going on. she doesn’t understand what is happening to her grandmother, her mother, or her brother. stage: 5. elizabeth’s grandmother has spent a year dealing with her feelings about what she is going through. she’s been angry. she’s been sad. she’s tried bargaining. now that she has moved into the alzheimer’s care facility, she’s ready to enjoy each day she has left. stage: