Who is one of the best singers or what song is one of the best?

Answer the questions in the image for brainliest. are my answers right? ?

Which of these contraceptive methods on its own is least likely to prevent pregnancy ? a. spermicides b. condoms c. surgical sterilization d. oral contraceptives

Will be awarded brainliest why does your brain do some tasks automatically? a. doing tasks automatically allows the brain to get a lot done. b. doing tasks automatically reminds the brain how to do the tasks. c. doing tasks automatically gives the brain a chance to rest. d. doing tasks automatically lets the brain concentrate on those tasks.