Which of the following sentence is written in the passive voice?

a. the effect of cyanide are well known.
b. having left the building elvis never returned.
c. i would not provoke that man if l were you.
d. they considered their options.

Acid rain is a secondary pollutant. select the best answer from the choices provided true or false

Based on the cause-and-effect relationship in this sentence, what is the meaning of the word revert? the brownies kali made using a new recipe were too dry, so she reverted to her original recipe. a) to alter or change completely; revise b) to dispose of or remove; to throw away c) to prepare for something; assemble or make d) to go back to a previous state or practice

What is the narrators main conflict in this passage