BASICALLY asking, ‘What time is your watch showing?' Let us EXPLORE the given options:The preposition 'by' MEANS according to.The preposition 'in' means within an object, space, or substance.The preposition 'with' means having or holding something.The preposition 'on' means onto a surface.Hence, the correct answer is 'by'. Complete Sentence: What is the time by your watch? A preposition is a word that indicates the relationship between a noun and the other WORDS of a sentence. They explain relationships of sequence, space, and logic between the object of the sentence and the rest of the sentence. They HELP us understand order, time connections, and positions.