Choice a : Explains what the nations need to do and elaborates some.
--wrong answers--
Choice b only gives a statement of what the nations need to do.
Choice c is a question.
Answer:
My colleagues A, B, and I DESIGNED an experiment to test the impact on worker perceptions of well being when domesticated cats ARE ALLOWED to freely roam various work environments in which the subjects were normally employed. Their test environments WHICH WERE SELECTEE for our experiments: a law office, a laboratory in which experiments ARE PERFORMED using laboratory rats, and an automobile assembly line. One-way mirrored glass pannels WERE INSTALLED to allow video cameras to record the activity and researchers to observe the same and take notes. We secretly inserted observers directly into the work environment. These observers posed as outside contractors and WORE UNIFORM as a maintenance and cleaning staff, coffee and water service vendors, and similar suporting personnel. The observers DREW from the students who MATRICULATED into the experimental psychology courses from which this STUDY WAS DEVELOPED as an example of such studies generally.
The coach is the subject. the word purchased is the action verb. and have is a linking verb. :)
The reader can look at the surrounding words to help them find the meaning. the surrounding words are called context clues.
