The percentage of adults who report they are close to their siblings is

66%

Explanation:

The percentage of adults that reports being close to their siblings is 66%. This is significantly less than the proportion of people who are close to their siblings at a younger age. As people age, many tend to form meaningful connections with people outside of their immediate family. As a result, family connections can sometimes be weakened. Nevertheless, the relationship between siblings remains one of the strongest ones within the family.

answer; night terrors;

answerthe available supply of sunshine, allows people to grow and sell, (especially oranges);