Final answer:
Historically, Reserve Component units often have different training standards and resource allocations compared to Active Component units, with the Reserve Component usually considered to train at a lesser standard (Option C).
Step-by-step explanation:
The question pertains to the training and standards of Reserve Component units compared to Active Component units. Looking historically, for instance, in Russia and France where military service was required, the active forces were well-established, while reservists, those who had already completed their compulsory service, would be mobilized as needed.
The Reserve Component units typically follow different training regimes and have different resource allocations compared to their Active Component counterparts. It is a common belief that Reserve Component units typically train at a lesser standard than Active Component units (Option C), although this varies by country and military policy. Regardless, reserve forces are a crucial part of a nation's defense and can be called upon to serve alongside active forces when needed.
They often train during weekends and annual training periods.
While both Reserve Component and Active Component units receive physical fitness requirements, the standards may vary. Active Component units may have stricter physical fitness standards because they dedicate more time to physical training as part of their full-time military duties.