Question: Why would someone not want to be cogitating? - dance - decision - headaches - reaching conclusion - enlightenment  The best answer is
Answer: headaches

Question: To think for a long time you need to be able to? - sit quietly - concentrate - know first - relax - drink  The best answer is
Answer: concentrate

Question: Why are there different kinds of dogs? - do many things - go outside - to give the ark more diversity - many colours - sleep soundly  The best answer is
Answer:
many colours