What service do UCSC loop buses provide on campus?

The correct choice highlights that UCSC loop buses operate solely on campus, providing a convenient transportation option for students, faculty, and visitors. These buses come approximately every 15 minutes, which is particularly beneficial for those who may need to travel between various locations on the expansive campus without the need to walk long distances or find parking.

This on-campus service is designed to facilitate easy movement within the university, allowing individuals to access different buildings, dining halls, and facilities efficiently. The regular schedule ensures that wait times are minimal, making it a practical transportation solution for everyday campus life.

The other options don't reflect the primary focus of the UCSC loop buses: they do not transport students off-campus, provide rides into the city, or operate exclusively during daylight hours, thus clarifying the specific and essential role that these buses play in the university's transportation system.