The answer is B. This would may not affect the percentage, since students who are the first in their family to go to college may be more likely to respond, but the sample would still be much less likely to be representative.
Here is the reasoning:
A convenience sample is a sample that is easy to obtain, but it is not necessarily representative of the population. In this case, the sample of students who choose to visit the website and answer questions is a convenience sample because it is easy to obtain, but it is not necessarily representative of the entire student body.
Voluntary response bias is a type of sampling bias that occurs when only a certain type of person is likely to respond to a survey or questionnaire. In this case, students who are the first in their family to go to college may be more likely to respond to the survey, which would lead to an overestimation of the percentage of first-generation students in the population.
Undercovering occurs when a portion of the population is not included in the sampling frame. In this case, students who do not have internet access would not be able to participate in the survey, which would lead to an underestimation of the percentage of first-generation students in the population.
Therefore, the correct answer is that this method would may not affect the percentage, since students who are the first in their family to go to college may be more likely to respond, but the sample would still be much less likely to be representative.