Final answer:
The customer's specific concern about the rug cannot be determined from the provided information about bedroom color preferences among students.
Step-by-step explanation:
The concern the customer has about the rug is not specifically mentioned in the given data regarding bedroom colors chosen by students. Without additional context, it's not possible to definitively answer whether the customer is worried that the rug's color might be too dark, that it's not suitable for a daughter's room, that it is too expensive, or that the rug is too small. To provide an accurate answer, more information is needed about the customer's specific concern related to the rug.
The customer's concern about the rug is that the color might be too dark, as stated in option 1. This suggests that the customer prefers a lighter color for the rug. Option 2 mentions that the rug is not suitable for a daughter's room, which could be another factor influencing the customer's decision. Option 3 mentions that the rug is too expensive, which indicates that the customer might be concerned about the cost. Option 4 states that the rug is too small, which suggests that the size of the rug is a matter of concern.