Which sentence corrects the error in pronoun-antecedent agreement?

they had a hard time choosing the topic of their project.
students can research any subject they are interested in as long as our subject is related to the city’s history.
we included a lot of photographs in his presentation.
i plan to take our own pictures of interesting old buildings around the city.

Which piece of evidence would best support reason #1? othe history of using animals for research extends asfar back as 322 bce, when early greek physician-scientists, such as aristotle and erasistratus, performed various experiments on living animals. animal research played an essential role in thedevelopment of herceptin and tamoxifen, twomedications that have already saved the lives ofthousands of women who have been diagnosed withbreast cancer. even those who believe in testing on animals when it is hnecessary for vital medical research practice what isknown as "the 3 rs-reduction, refinement, andreplacement to reduce the number of animals usedfor testing. biologists believe that chimpanzees share at least 98.4percent of the same dna as humans and gorillas shareat least 97 percent, making primates a popular andlikely choice for the testing of products intended for humans

Shauna wants to use facts from a government website in her speech. which element is she adding to her speech? a. background information b. narrative c. evidence d. commentary e. theme

In 150 words, explain what northup (in twelve years a slave) could have done to prevent being kidnapped by hamilton and brown.