Final answer:
Galen's statement regarding the sum of digits in a number being divisible by 3 is true and can be proven true or false.
Step-by-step explanation:
Regarding Galen's statement, the following statements are true:
A: The hypothesis of the statement is 'If the sum of the digits in a number is divisible by 3.'
B: An equivalent statement is 'If the sum of the digits in a number is divisible by 3, then the original number is divisible by 3.'
D: The statement can be proven true or false.