the correct answer you are looking for would be the sun. when our side of the planet is facing the sun it is day time
Border marks where a country is : a country is encompassed by borders. This is similar to ocean and shores: shores mark where the ocean is: an ocean is encompassed by the shores.
The answer is d.
Can you at least put a picture or write some of the paragraphs that showed a bit of the grandmothers opinion about there vacation that would help me and answer that question that your stuck on.