The rapidity of the current, which in its whole course runs at the rate of from four to six knots an hour, is perhaps its most remarkable feature. The water is of a fine blue colour, but with a slight milky tinge, and not so transparent as at first sight would have been expected.
Which of the following best describes the primary focus of this passage?
- A
The historical context of the current's discovery.
- B
A detailed description of the current's physical properties.
- C
The challenges of navigating the current.
- D
The origin of the current's milky tinge.
