A researcher was studying a group of elderly people to determine the role of changes in their brains with changes in cognitive ability. When the people in the study died, their brains were removed and studied. The researcher discovered that most people of the same age had similar changes in their brains. However, the people who engaged in intellectually stimulating activities like reading and writing tended have less loss of cognitive ability. Evaluate which answer presents the conclusion the researcher was most likely to reach.

Why is this statement not a hypothesis? sunflowers require soil and plenty of sunlight and water to grow and thrive. a. it is a well-known fact. b. it is a proven theory. c. it is not falsifiable. d. it is difficult to test.

Which is the best conclusion that can be drawn regarding the status of african-americans in the south in the late 1800s? a) african-americans made tremendous political, social, and economic advancements during the reconstruction era. b) passage of the 13th, 14th, and 15th amendments to the u.s. constitution guaranteed equal status and rights for all african-americans. c) the reconstruction policies enacted by the federal government were highly effective in african-american citizens transition to life after slavery. d) although african-americans had equal rights under federal law they were still economically, politically, and socially inferior to whites in the south during the reconstruction era.

10. a driver should evaluate the condition of the intended driving path as being