The answer is B (An app on your smartphone that tracks the nutritional status of foods you eat)
I believe theanswers are A,C, and D.
Answer:
It's normal for a baby to show his first tooth as early as four months, or a late child could be 15 months . A few babies are even born with a tooth! A child should be between two and a half years old or three years old before he/she has a full set of their teeth .
A famine may occur when there is a food shortage due to a bad crop of a certain food. Or if there is more people needing a certain food than what is available. <span />