If you are the control operator at another amateur's station with higher qualifications, what privileges do you have?

As the control operator at another amateur's station with higher qualifications, you are granted all emission privileges associated with the additional qualifications. This means that while you are operating under the authority of the station's license, you can utilize the capabilities and privileges that come with the higher class of license held by that station's operator.

Holders of higher-level amateur licenses often have access to additional frequency bands and modes of operation that lower-level licensees do not. Therefore, when you operate the station, you take on the privileges afforded by the higher license—including the ability to operate on frequencies and using emissions that might otherwise be outside your personal qualifications. This is an important aspect of operational authority in amateur radio, as it allows operators to engage in activities and utilize resources that contribute to the amateur radio community as a whole.

The other options imply restrictions or limitations that do not apply when you are acting as the control operator at a station with higher qualifications. Understanding this principle is key for amateur operators, particularly when collaborating or operating on behalf of others.