Which two cross streets are associated with Stanford?

The correct association of cross streets with Stanford is represented by the intersection of Sand Hill Road and Arboretum Road. This area is notable as it is located near the Stanford University campus and is relevant to the institution's research and development activities, particularly in relation to the Stanford Research Park, which is a critical hub for innovation and technology adjacent to the university.

The other choices do not have a direct linkage to the core Stanford area. For instance, Main Street and Center Street are more representative of downtown contexts elsewhere, potentially in nearby cities, rather than being specifically tied to Stanford. El Camino Real and Page Mill Road are significant routes in the region but are more associated with access to various parts of Palo Alto and surrounding areas, rather than being central to Stanford itself. Lastly, South Bascom Avenue and Camden Avenue are situated in a different part of the South Bay area, which is not directly associated with Stanford University.

Thus, the intersection of Sand Hill Road and Arboretum Road genuinely reflects a connection to Stanford, making it the correct choice.