Answer:
Pick Hydrogen, but read below.
Explanation:
The blacks are Carbon. They have 4 connections. The left Carbon has 3 whites connected to it. It is not totally an exclusive answer, but the whites could be anything in Column 17 (F, Cl, Br, I) or Hydrogen. Likely it is hydrogen.
The most important thing or help can you give to the
individual or family is emotional support because the stress is not only to the
person having the alzheimer’s but also to the family who is taking care or
giving the first hand care giving.