I’ll give brainless plis

Is it true the ancient egyptians created a calendar that had 10 days in a week

These facilities were organized and sponsored by churches or charities during the great depression in an effort to feed the homeless and needy.

Which of the following  bestillustrates a negative reinforcer?               a.  copland gives up candy to stave off chronic acid indigestion.    b.  nancy learns that she prefers chocolate over vanilla.    c.  carmine changes his major to english lit after failing a math exam.    d.  on a hot day, lindberg always drinks lemonade.