Answer: 1) contains a preposition, and 4) contains an object and any modifiers of the object.
Explanation: a prepositional phrase is a phrase that begins with a preposition and ends in a noun, pronoun, or noun phrase. So from the given options, the ones that represents a prepositional phrase, are the corresponding to options 1: contains a preposition (such as: under, after, of, to, with, etc) and 4: contains an object and any modifiers of the object (for example: with my sister, the preposition is "with," the object is "sister," and the modifier is "my").
