Final answer:
The number of masks per row in a cabin likely relates to safety measures in transportation, typically one mask per seat. Without specific context, for common narrow-body aircraft, there would be two masks per row if considering seats on one side of the aisle, leading to option C (2) being the correct answer.
Step-by-step explanation:
The question about the number of masks per row in a cabin likely pertains to safety regulations in the context of air travel or emergency preparedness within transportation systems. Although the information provided does not specify a particular type of cabin, such as those found in aircraft or ships, we can infer that the question is related to standard safety measures which dictate the availability of oxygen masks in the event of an emergency.
Considering the most common configurations found in commercial aircraft, where every passenger seat is equipped with access to an oxygen mask, the answer to how many masks per row there are in a cabin would typically correlate with the number of seats in a row.
Since the configuration of seats can vary based on the aircraft model, the exact answer could differ. However, in a standard commercial airplane, such as a Boeing 737 or an Airbus A320, there are commonly three to six seats per row. Therefore, if we assume the most common narrow-body aircraft configuration, we would expect there to be one mask per passenger seat. If there are two seats on either side of the aisle in an economy class configuration, this would suggest that option C. 2 is the correct choice, assuming one mask per seat and one row being referred to here is a set of seats on one side of the aisle.
It is essential to note that this question might refer to a specific type of aircraft or safety scenario, and thus without additional context, it is challenging to provide a definitive answer. Moreover, safety regulations can evolve, and cabin configurations may differ among airlines and types of aircraft.
For the most accurate information, consulting the airlines' safety guidelines or aircraft manufacturer specifications would be necessary. To address the question directly based on common configurations, especially for narrow-body aircraft, we mention the correct option in the final answer, which is option C. 2.