Final answer:
The permissible amount of hair bulk for males varies and is typically dictated by personal preference, cultural standards, or specific institutional rules that require hair to be neat and not obstruct the wearing of equipment.
Step-by-step explanation:
The question regarding the amount of bulk that males are allowed to have for their hair specifically concerns hair volume or size rather than the hair's mass or length. Generally, there is no universal measure for the permissible bulk of a male's hair, as it often depends on personal choice, cultural norms, or institutional rules such as in schools or the military. In institutions with regulations, the guidelines typically specify that hair should be well-groomed and not interfere with the wearing of equipment or uniforms. Therefore, the reference to a "14: This amount of mass corresponds to that of a tiny length of hair that is shorter than it is wide" does not provide relevant information for this particular inquiry about hair bulk.