Answer:
The answer is C
Step-by-step explanation:
For option (a), this is a mere question that any single person can answer and give satisfaction to the researcher or inquirer. The researcher does not state the class of people he wants the answer from.
For option (b), it is quite obvious that business teams of more than 6 members will be more productive than teams of maximum 6 members. The question says "how?" but doesn't tell the qualities or age of each team member in each of the teams.
For option (d), it is a very simple research problem. To solve this is to get data (from the admissions offices of the major U.S. state universities) on the number of native-born students and that of international students. Once these numbers are summed up for both categories of students, the ratio (division) can easily be gotten.
Now, this is a problem/question with a solution/answer but it doesn't add value to life. The researcher just wants to know the ratio but isn't going to use it to point out something that can improve the existence of man in society.
For option (c), the researcher wants to know how the organization of mathematical information in the long term memory of 3 year olds differs from that of 13 year olds.
This is a well written basic research problem. When the researcher asks "how does it differ from...?" or "what is the relationship between/among...?", he is prepared to test some elements such as the volume of mathematical information stored in the long term memory or the level or extent of coordination of mathematical information in each group.
These are elements whose numeric value can be tested statistically against one another and there is no basic research without statistical measures and testing because that is where conclusion on the relationship among the variables is drawn from.
From this particular research problem, the researcher can properly develop a null hypothesis and an alternative hypothesis. He will observe a number of individuals in each age group, to derive data to work with.
The solution to this problem/question can very well be of use in society or in future research sojourns.