Reading the paragraph. We saw it from miles away, sitting atop the crest of a hill. The old walls were crumbling, but you could still see the outlines of the vast parapets and stone towers.

The author is most likely looking at

an old house.
an old castle.
an old mansion.
an old building.

the unsaturated fatty acid is a fat consist of one or more double bond in the fatty acid chain. if it contains one double bond then called as monounsaturated fatty acid however if, it contains more than one bonds called as a polyunsaturated fatty acid. true fatty acids are called unsaturated fatty acids as it reduces the risk of high blood cholesterol and good for health.

the correct answer is:

from context clues heliotrope is probably a flower.

a heliotrope are peruvian plants that have small purplish plants.

c is the answer because first she would blush to make the reader wonder why which they find out in the next line.