Marty's paper argues that nutrition education should be increased in schools because childhood obesity is increasing in the united states. during peer evaluation, his friend offers a counterclaim that nutrition education has no effect on obesity. is this counterclaim appropriate? why or why not? a. yes, it is both defensible and arguable. b. no, because it is not arguable. c. no, because it is not defensible. d. no, because it is neither defensible nor arguable.