Final Answer:
The first-generation parents (A and B) had 5 children.Thus the option C) 5 is correct.
Step-by-step explanation:
The total number of children can be determined by summing the options for the number of children each parent had. From the options, parent A had 2 children (Option A), 4 children (Option B), 5 children (Option C), and 7 children (Option D). Parent B had the same options. By adding the possible numbers of children for both parents, we can calculate the total. 2 + 4 + 5 + 7 = 18. Therefore, the first-generation parents (A and B) had a total of 18 children.
Options A, B, and D represent the number of children for each parent individually, and Option C is the sum of the possible children for both parents. The correct answer is determined by considering the total number of children born to the first-generation parents as a whole.
Understanding the family structure is essential for various analyses, including genetic studies and population dynamics. The clarity in interpreting such data is crucial for accurate conclusions and informed decision-making in various fields, including demography and genetics.
Thus the option C) 5 is correct.