The most representative sample for Linnea to survey would be:
A. 25 students in the cafeteria
This option is the best because it includes a larger sample size (25 students) and is more likely to reflect a diverse range of movie preferences. In contrast, options B and C focus only on students who are specifically waiting for an action movie, which may not represent the overall preferences of all students at the school. Option D includes only 5 students, which is also too small to provide a reliable sample.