To determine what percentage of the people surveyed own fish, we need to consider the portions of the survey respondents who own fish, regardless of whether they own a bird.
The relative frequency table provides us with the following information:
- The relative frequency of customers who own both a bird and fish is 0.04.
- The relative frequency of customers who do not own a bird but own fish is 0.06.
To find the total relative frequency of customers who own fish, we add these two relative frequencies together:
[tex]\[ \text{Total relative frequency of fish owners} = 0.04 + 0.06 \][/tex]
Thus:
[tex]\[ \text{Total relative frequency of fish owners} = 0.10 \][/tex]
To convert this relative frequency into a percentage, we multiply by 100:
[tex]\[ \text{Percentage of fish owners} = 0.10 \times 100 = 10\% \][/tex]
Therefore, the percentage of the people surveyed who own fish is:
[tex]\[ \boxed{10\%} \][/tex]
The correct answer is:
C. [tex]\( 10\% \)[/tex]