Moral science help please

What is the authors purpose in writing this paragraph

You make a necklace using blue.purple and green beads in aratio of 1: 1: 2.you use atotal of 168 beads. how many green beads are in the necklace

Which sentence is an example of objective, third-person writing that could be found in a scientific essay? a. i was 15 years old when i developed an eating disorder. b. my sister developed an eating disorder when she was a teenager. c. eating disorders often appear during the teen years. d. you are most likely to develop eating disorders during your teenage years.