Difficulty: Easy
Correct Answer: attended by all
Explanation:
Concept
Attend is a transitive verb meaning "be present at" and does not take "to" in this sense. The correct passive is "was attended by all invitees."
Option analysis
attended by all — correct verb + agent phrase in the passive. ✅Other options wrongly insert "to" or are ungrammatical.
Final Answer
"The meeting was attended by all invitees."
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