Biotin deficiency (the lack of vitamin B7) is a rare nutritional disorder that occurs in people from this age group. A.Adults B.Elderly people C.Infants D.All of these Answer and Feedback Answer:D do you want? view more test Xem thêm Share this post Some other questions you may be interested in. … is not a new idea. … were first viewed through a telescope by Galileo. … Boston’s proximity to London, it is an important link in the nation’s transportation system. The city council is empowered not only to enact new laws, … select a new mayor. Staying in a hotel costs … renting a room in a house. The noise of the airplanes … from the airport was unbearable at times. Not only knowledge and skills, but also attitudes … in school. I had hoped ... the game. … a continuous mass of water on the Earth’s surface, all continents are islands. Fruit is one of the most abundant, nutritious and … foods.