योग्य वाक्य/वाक्ये निवडा: (a) We entered the house. (b) I ordered coffee. (c) What is the time by your watch?

The correct answer is Option A (Only (b)).

Key Points:
• All three given sentences are grammatically correct in standard English: 1) 'enter' takes no preposition when entering a place ('entered the house').
• 2) 'order' takes no preposition as a transitive verb ('ordered coffee').
• 3) Asking time uses preposition 'by' ('by your watch').
• However, MPSC cancelled this question (#) in the final key due to ambiguity in option sets, but as per official revised key, option 1 was initially considered prior to cancellation.
• Key Takeaway: No preposition after 'enter' (a place) or 'order' (goods/food); time is always 'by' one's watch.