Which sentence is the best use of passive voice?

The door was opened by Katrina when the bell was rung by Lana.
Water is formed by two molecules of hydrogen and one of oxygen.
The story was read by each person in the class, taking turns.
This paper airplane was folded by Andrea and th

This is a set of words that begins with a preposition.

Read the passage below and answer the question. jake was incredibly loquacious. he once gave a twenty minute monologue about his favorite movie. in the passage above, the context clue used to find the definition of loquacious is an example of an antonym an example a synonym the tone of the whole phrase

Which sentence is the most effective in stating the overall purpose of section 4, “confidentiality of user names and passwords? ”