Answer:
C. 53%
Step-by-step explanation:
From the table, we see that,
The number of families in Survey 1, 3 and 4 are increasing as the number of pets increases.
But, that is not happening in Survey 2. This might be due to some bias.
<em>Thus, Survey 2 is most likely to be biased.</em>
So, we get the unbiased survey are 1, 3 and 4.
So, the number of families in these surveys having 2 or more pets are,
Survey 1 = 25, Survey 3 = 27, Survey 4 = 27
So, the total number of families having 2 or more pets = 25 + 27 + 27 = 79
Also, the total number of families for the 3 surveys = 50 + 50 + 50 = 150
Thus, the percent of families having 2 or more pets = = 52.7% ≈ 53%
Hence, option C is correct.