Topic: Preposition,

Best Answer Explained in Below-:

In the question 'What is the time ___ your watch?', the most appropriate option is 'by' (A). This is because the phrase aims to inquire about the time as indicated by the watch or how it reflects the current time. The preposition 'by' is commonly used to express the source or reference point for telling time, emphasizing what indicator is being used to determine the time.

When we say 'by your watch', it implies we are referencing the time that your specific watch displays, suggesting a means of measurement. The other options do not convey the same meaning. For instance, 'in' would imply a location within a timeframe, such as 'in your watch', which isn’t logical, while 'with' generally indicates accompaniment or possession and does not fit the context. Lastly, 'at' suggests a specific point in time but does not relate directly to the function of the watch. Thus, 'by your watch' is the best choice to clearly connect the inquiry to the time as measured or shown by the watch.