Using standard alphabetical filing rules, which name is filed last: Jose San Pedro, Jose Santos, Jose Sanchez, Jose San Miguel?

The correct answer is B. Jose Santos

Indexed surname first, the filing order is SANCHEZ, Jose → SAN MIGUEL, Jose → SAN PEDRO, Jose → SANTOS, Jose. The name filed last is Jose Santos. "San Pedro" and "San Miguel" are filed as "SanPedro" and "SanMiguel". Comparing sanchez, sanmiguel, sanpedro and santos, "sant" comes last because t follows c, m and p.