Final answer:
The mating scheme where females are sequentially placed with one or two males for a week is most closely related to b) polyandrous mating, where one female mates with multiple males. However, this could also be a form of rotational mating depending on the context.
Step-by-step explanation:
In the context of mating schemes, when females are placed sequentially with one or two males for one week, the mating scheme being described is likely polyandrous. This can be inferred because polyandry is a system where one female mates with multiple males. It's important to note, however, that the question seems to have a mix-up since polyandrous systems are generally characterized by females attracting multiple males to resources they control, leading to many males being attracted to few females. In contrast, if females are sequentially placed with males, it could also resemble a controlled rotational mating system depending on the specific intentions or outcomes desired in the given context. Polyandry is less common compared to polygyny, where one male mates with many females, as females usually invest more energy into offspring production and development.