Protists are least similar to bacteria because all the others are eukaryotic cells. Bacteria are prokaryotic.
Spiders,bats,hienis,monkeys
Https://undsci.berkeley.edu/lessons/heating_cooling.html (This should help you)
The correct answers for your questions are B. homologous for the first question, the second questions answer is C. Cats and humans share a common ancestor.
let me know if its correct or wrong, however positive its correct.