What form of deductive reasoning is used in this argument? if a triangle is scalene, it has no sides the same length. if a triangle has no sides the same length, then it isn't equilateral. if a triangle is scalene, then it isn't equilateral.

In all honesty, there really is no “work” per say to show. mainly it’s just using the process of elimination. the question is asking which domain(s) would be the most appropriate for the function c(n). n is the number of observed vehicles so right away, 1, 2, and 3 can be eliminated.why? 1, 2 start in the negatives and therefore it is impossible to observe negative cars. so, #4 would be the best answer to the given problem.