Which flight attendant is responsible for performing the through-passenger count?

The responsibility of performing the through-passenger count lies with the flight attendant in charge for that specific flight segment, typically identified as the lead flight attendant or purser. This role involves ensuring that all passengers are accounted for throughout the flight and confirming the total number of individuals on board before departure and during in-flight operations.

In this context, the choice identified as the correct answer is the flight attendant who holds this lead position. Through-passenger counts are critical for safety and operational purposes, as they ensure compliance with regulations and help in managing in-flight services effectively.

The other options do not fulfill this specific responsibility, as they pertain to flight attendants designated for other roles that do not involve counting passengers. This particular dynamic highlights the importance of designated roles within the flight attendant team for maintaining safety protocols and operational efficiency during flights.