The correct answer is option 'C', the Kuroshio current.

The ocean currents play a crucial role in redistributing heat around the globe and influencing the climate of different regions. There are two main types of ocean currents: cold ocean currents and warm ocean currents. Cold ocean currents originate from polar regions or high latitudes and transport cold water towards the equator or lower latitudes, while warm ocean currents transport warm water from the equator towards the poles.

Let's analyze each of the given options to identify the cold ocean currents:

a) Canary current:
The Canary Current is a cold ocean current that flows southward along the northwest coast of Africa. It originates from the cold waters of the North Atlantic and moves towards the equator. This current is named after the Canary Islands, which are located in its path.

b) California current:
The California Current is another cold ocean current that flows southward along the coast of California in the United States. It originates from the cold waters of the North Pacific and moves towards the equator. This current is responsible for the cool temperatures along the California coastline.

c) Kuroshio current:
The Kuroshio Current is a warm ocean current that flows northward along the eastern coast of Taiwan and Japan. It originates from the warm waters of the North Pacific and moves towards the poles. This current is an extension of the North Equatorial Current and is known for its strong flow and warm temperatures.

d) Oyashio current:
The Oyashio Current is a cold ocean current that flows southward along the eastern coast of Hokkaido, Japan. It originates from the cold waters of the North Pacific and moves towards the equator. This current is responsible for the cold temperatures and sea ice formation in the region.

Therefore, the correct answer is option 'C', the Kuroshio current, as it is a warm ocean current rather than a cold ocean current.