Final answer:
An eastern boundary current is generally narrow and swift. True.
Step-by-step explanation:
An eastern boundary current is generally narrow and swift.
The statement is true. Eastern boundary currents, like the California Current and the Canary Current, are usually narrow and swift. They flow along the eastern edges of ocean basins, driven by the prevailing winds and the Earth's rotation. These currents are typically colder than their western counterparts and play an important role in the distribution of nutrients and marine life.