Which statement is true? The non-dominant hand is used to fingerspell.
The dominant hand acts as a support or base.
The dominant hand usually performs the action in a two-handed sign.
The non-dominant hand usually performs the action in a two-handed sign.

The answer is a. society, sociology is the  systematic study of social interaction. it's a social science.

In paragraph 47, it says “moments like these make a pioneering flight anything but dull” i’d say he’s optimistic and determined? ? and in 48, it describes how i’m assuming people he looks up to walked the same path so maybe he’s honored to be on the journey ? sorry if i’m wrong.