In this survey, out of the 97 children who have 1 sibling, 40 of them do not have a pet.
What is a survey?
A survey is a method of collecting data among a group of predefined respondent from which the conducting authority gain knowledge.
For option A: Out of the 125 children who do not have a pet, 18 of them have 2 siblings.
This statement is wrong. Because, it is mentioned that all of 125 children has a pet.
For option B: Out of the 97 children who have 1 pet, 40 of them do not have any siblings.
This statement is also wrong. Because, it is mentioned that all have 1 sibling.
For option C: Out of the 125 children who do not have any siblings, 34 of them have a pet.
This statement is also wrong. Because, it is mentioned that all of them has a pet.
For option D: Out of the 97 children who have 1 sibling, 40 of them do not have a pet.
This statement is true. Because out of 97 children, children who don't have any pet is (97 - 57) = 40.
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