The normal and safest way for a sailor to be lowered in a bosun's chair when descending vertically is __________.

Correct Answer: Option B — for that sailor to feed the hauling part through a bosun's chair hitch

Controlled descent in a bosun's chair is achieved by the sailor manually feeding the hauling part through the hitch. This method allows the individual to regulate their own speed and stop instantly if necessary, providing the safest and most reliable means of vertical movement without relying on external assistance.