Can someone me on this question? i'm really stuck!

What restrictions do you think should be placed on studies with animal participants? explain

Mr. mann's science students were experimenting with speed. they set up a 1 meter (100 cm) track. the students used balls instead of cars. the balls were different sizes and made of different materials. four at a time, students rolled balls around the track to see which had the fastest and slowest speeds. some of their data are shown in the table. which ball will take the longest to complete one lap around the track?

An artist entered into a written agreement to sell a patron a partially finished painting once it was complete. the patron later learned that the artist planned to sell the painting to a third party who offered to pay the artist more than the contract price. the patron filed suit to compel the artist to sell the painting to her in accord with the terms of their agreement, while the artist denied that the painting the artist planned to sell to the third party was the subject of the agreement with the patron. at trial, the patron did not introduce the written agreement or explain its absence. rather, the patron sought to testify that, when she signed the agreement, the artist had pointed to the painting in question and stated that it was the patron’s painting. the artist’s attorney objected to the testimony that the artist identified the painting as belonging to the patron. how should the court rule? asustain the objection, because the artist’s statement was hearsay. bsustain the objection, because the patron failed to produce the written agreement or explain its absence. coverrule the objection, because the statement is not hearsay. doverrule the objection, because the statement was relevant.