What is Obama’s last name?

Which of the following is an example of negative reinforcement? a.marty knocks over his mother's prize fern so she gives him a time out. b.gwen mows the lawn and her dad takes her out for ice cream. c.tara takes an aspirin, and her headache begins to go away. d. peter comes in late from his lunch and is fired from his job.

Assume that the banner needs to be 18 feet long instead of 15 feet

What is the effect of mori's introducing japanese terms especially ronin paragraph 6 at the beginning of her essay