Option 1: The Benguela current does not flow along the Brazilian coast. This is incorrect.

Option 2: The Benguela current does flow off the southwest African coast. This is the correct answer. The Benguela current is a cold ocean current that runs northward in the Atlantic Ocean along the western coast of southern Africa. It is named after the Benguela region in Angola.

Option 3: The Benguela current does not flow off the Spanish and North African coast. This is incorrect.

Option 4: The Benguela current does not flow along the west coast of the United States. This is incorrect.

Therefore, the correct answer is option 2, which states that the Benguela current flows off the southwest African coast.