It isn't "on the beach" because that is an adverbial phrase (it tells where you want to run), it isn't "the soft sand" because that is the object in the sentence, it isn't "have always wanted" because that is a verb (in present perfect tense) and it isn't "feel" because that is a verb as well.
Therefore, the prepositional phrase is "beneath my feet" because it is telling where the sand is in relation to your feet, which is what a preposition does.
Answer:
Reading the stars ⇒ informs one of the future
Astrology or the practice of reading the stars in order to find out the future was a widespread practice in Elizabethan England. It was so widespread that it was considered a science and as such had significant power over the people.
Using worms, mercury, and powdered skull ⇒ cures illness
In Elizabethan times, it was a firm medical belief that using worms, mercury and the powered skull of a man who was killed in battle could cure illness.
Lending fire to a neighbor ⇒ results in one's horse dying
Another Elizabethan belief was that if you lent fire to a neighbor, your horse would die. Needless to say it was not normal practice to lend a neighbor fire.
C. The narrator feels disillusioned
I think it might be very and hear
i think