Which word is not a derivative of versare? a, adversity, b, avert, c, per verse, d, attend

Which of the following pronouns are singular

"night. no one was praying for the night to pass quickly. the stars were but sparks of the immense conflagration that was consuming us. were this conflagration to be extinguished one day, nothing would be left in the sky but extinct stars and unseeing eyes." explain the images included in the passage. how is the use of the image of night contradictory to how we might expect it to be used

As a representative of a pharmaceutical company, you have been asked to speak to a group of physicians at a medical conference to introduce a new drug. when discussing how the drug works, which strategy is not appropriate?