When observing a group of children at a daycare center, emily made the following observations: five year old children played in one location during independent play time. three year old children moved between different activities, rather than staying in one location. by analyzing emily’s observations, what could be a valid conclusion? a. five-year-old children have longer attention spans than three-year-old children. b. three year old children do not like being in daycare. c. five-year-old children are favored over three-year-old children at the daycare center. d. three-year-old children are favored over five-year-old children at the daycare center.

Juan and carol were studying invertebrates in biology. they knew that segmented or earth worms preferred a dark, moist habitat. during this lab, they would be investigating the responses of organisms called planaria or dugesia tigrina. these were simple flatworms that still had a one-way digestive system and a very simple nervous system. juan and carol placed the planaria in a petri dish containing cool, distilled water that was partially covered with black paper. they shined a light on the dish. next, they removed the paper and placed a small amount of chicken liver at one end of the dish. they added a few large salt crystals to the water. finally, they added drops of hot water to the cool water in the petri dish. their results can be seen in the data table. according to their experiment, all but one conclusion is valid.