PART a All Exercise Sessions Are Healthy Activities, So Some

Short Answer

PART A All exercise sessions are healthy activities, so some jogging events are healthy activities, since some exercise sessions are not jogging events.
Which of the following correctly expresses the form of this argument? PART B
Which of the following substitutions proves the argument invalid?
A) E = dogs, H = mammals, J = fish.
B) E = mammals, H = animals, J = cats.
C) E = fish, H = animals, J = dogs.
D) E = cats, H = mammals, J = animals.
E) E = animals, H = dogs, J = mammals