Answer: I'm pretty sure it is <u><em>cultural convergence</em></u>.
Explanation:
From youngest to oldest
Fetus Protostar
Infancy-Adulthood Fusion Ignition-Main sequence
Middleage Red Giant/Supergiant
Old age-Death White Dwarf/Black hole
Monarchs, such as royal families.
The answer is A (own at least twenty slaves)
