Fast best answer gets ! 50 points! read the passage: for the last three years, shumaker has been working with azy and five other orangutans at the zoo's think tank building. in addition to these great apes, think tank researchers are studying creatures as various as hermit crabs, leafcutter ants, and macaques. they hope to learn whether-and-how animals think. some of the scientists look at tool use. others observe the animals' social life. shumaker would like to know if orangutans can learn language. which best identifies the author's purpose? to persuade to inform to entertain to tell a story

Based on the text here, the best choice that suits your passage will be to inform, the author is trying to inform us with information about orangutans at the Zoo as well as other creatures.

Hope this helped! :D  

the pronoun reference replaces a noun, but you have to make sure there's no room for confusion.

in the first sentence "her" could be referring to shely or to the sister. the answer there is "shelly called her sister and told her about the new baby."

in the second sentence "it" could be referring to the roof or the floor. the answer there is "since the roof leaks on the family room floor, we need to repair the roof."

answer: may i see the sentences?