Each category requires different methods in order for the particular skill set to be learned.

The report states that these categories require particular attention, but what specific solutions can be proposed to deal with their practical problems?

This is the very reason why pure concepts, or categories, require schemata.

All four categories require among the highest insurance premiums.

Normally, categories (c) and (d) will require to pay the economic fee for the course.

A fourth category requires that a merchant have a single connection to an alternative payment provider.

Both categories require candidates to be citizens or aliens admitted for permanent residency.

Additionally, several other categories of vehicles also require a certificate:

Each category requires a separate subscription; entries are updated monthly.

Amateur categories require that the player is still an amateur on the opening day of the tournament.