Solution:
Words that usually precede nouns or pronouns and express their relation with other parts of the sentence are known as prepositions. Prepositions can be of several types, depending upon their usage. One of the types is the preposition of direction, which is used to denote the direction in which something or someone travels. All the given prepositions in the question are prepositions of direction. Their usage can be understood using these examples, "the girl ran towards her mother", "she lives across the street", and "she will return from London today."