a) The Gulf Stream originates at the tip of Florida and follows the eastern coastlines of the United States and Newfoundland before crossing the Atlantic Ocean.
b) The Gulf Stream affects the climate of the land masses it passes by, including the coast of northern Europe and other coasts that border the Atlantic Ocean.
Eastern Coast of the US, Western coast of Europe and upwards to the polar region
Explanation:
The two images explain clearly that the currents help contribute to warm water, and shown in the second infographic, it says that it brings that water towards the areas listed above. Even without that second picture, we can conclude that it at least goes around north Eastern coast of the US and West Europe as seen by the Gulf Stream current's projection based on arrows.
