Where are the three passenger supplemental oxygen masks located in the ERJ 175?

In the ERJ 175, the configuration of passenger supplemental oxygen masks is designed to ensure accessibility for all passengers in case of an emergency. There are generally three supplemental oxygen masks located on both the Aisle/Crew Right (A/CR) and Aisle/Crew Left (A/CL) sides of the aircraft. This placement allows each of the passenger seating areas effective access to oxygen in the event of decompression or other emergencies requiring supplemental oxygen.

This design maximizes safety by ensuring that all passengers can reach a mask quickly, no matter where they are seated in relation to the aisles. The other options do not reflect the actual distribution of masks in the aircraft, as they either limit access to one side or incorrectly suggest that the masks are located only in the overhead compartments, which is not how the ERJ 175 is configured.