If the strength of gravity is 9.8 newtons per kilogram, that means: a. each newton of force equals 9.8 pounds

b. each pound of force equals 9.8 newtons

c. each newton of mass weighs 9.8 kilograms

d. each kilogram of mass weighs 9.8 newtons

I would choose the D.

But if your teacher taught you the things in that way there is a big problem because first of all you are talking about an ACCELERATION of gravity and ot's unit of measurement it's m/s^2 but better to respect your professor's will So D is the right one...

no sign of dia of fuel cell

where’s the list ? the question is incomplete