Final answer:
A student in a racially diverse school is more likely to have cross-racial friendships due to the increased opportunities for interaction with peers of various racial backgrounds.
Step-by-step explanation:
The student who is more likely to engage in more cross-racial friendships is b. A student in a racially diverse school. In environments where diversity is present, students have more opportunities to interact with peers of different racial backgrounds, which can lead to the development of friendships across racial lines. A racially homogeneous school is less likely to offer such opportunities. Strict parenting styles or limited social skills might influence a student's social interactions, but they do not directly determine the likelihood of cross-racial friendships occurring.