You would use B when talking about your report.
Answer:
They both extend across the continent so they have shores on both eastern and western sides. They are both nominally federal republics with a similar political organization. They both have large hispanic - specifically Mexican- populations. They are both conservative leaning countries.
Answer:
Julio _sabe_ tocar la guitarra.
Explanation:
I know how to speak Russian: <em>Saber</em>
Do you know her?: <em>Conocer</em>