Regarding the toad and tadpole question, is it acceptable if the student wrote "so that the frog will not eat its own eggs and offsprings"

My dd's answer was A,B and C for the frictional force question, though I think at their level, stationary object should be taken as no friction because by definition, friction opposes motion.


Few websites mentioned about static and kinetic frictions exist for stationary and moving objects.
http://ffden-2.phys.uaf.edu/211_fall2002.web.dir/ben_townsend/staticandkineticfriction.htm

I wonder if this is a fair and good question to ask a P6 student if it can cause controversy