Select the option that expresses the given sentence in passive voice.
"Mrs. Leela opened the window."

Explanation of the Correct Answer:
· The given sentence is in active voice in the past simple tense:
· Subject (Mrs. Leela) + Verb (opened) + Object (the window).
· When converting to passive voice, the object ("the window") becomes the subject, and we use "was + past participle (opened)" to maintain the past simple tense.
· The correct sentence is:
· "The window was opened by Mrs. Leela."
Other options:
· (a) "The window was being opened by Mrs. Leela." → Incorrect because "was being opened" indicates past continuous tense, which does not match the original tense.
· (b) "The window is opened by Mrs. Leela." → Incorrect because "is opened" changes the tense to present simple.
· (d) "The window is being opened by Mrs. Leela." → Incorrect because "is being opened" is present continuous tense.
Thus, the correct answer is (c) "The window was opened by Mrs. Leela."