Read the sentence. Selena, Ben, and Raj all won leads in the musical, and they has practiced every afternoon during study hall for the past two weeks. Which is the best replacement for the underlined words? have practice will practice will be practicing have practiced

If we compare and contrast electromagnetic waves with sound waves, all but one statement is true. that is a) sound waves require a medium to travel while electromagnetic waves do not. b) electromagnetic waves can travel through the vacuum of space while sound waves cannot. c) electromagnetic waves must have a medium in which to travel, but sound waves can travel anywhere. eliminate d) sound waves must bounce off of matter in order to travel while electromagnetic waves do not require matter to be present.