To answer this question, let's break down the information given:
The Smith family has:
- Mother
- Father
- 7 daughters
- Each daughter has 1 brother
From this information, we can deduce that there is only 1 brother for all the daughters. Therefore, there is only 1 son in the family.
To calculate the total number of people in the family, we add up the number of family members:
- Mother: 1
- Father: 1
- 7 daughters: 7
- 1 son: 1
So, the total number of people in the family is 1 + 1 + 7 + 1 = 10.
Therefore, the correct answer is option C) 10.