The use of a word or phrase that is less expressive or direct but considered less distasteful or less offensive than another word or phrase is called a(n)

Which of the following is not a method used for teaching children with autistic disorder to communicate?

a.) augmentative communication systems b.) sign language c.) simultaneous communication d.) All of these methods are used to teach children with autism to communicate.

According to the trichromatic theory of color vision, three different types of cones supposedly respond to

a) blue, green, and red. b) blue, red, and yellow. c) green, red, and yellow. d) blue, green, and yellow.