If f(x) is an odd function and the graph of f(x) includes points in quadrant iv, which statement about the graph of f(x) must be true?
it includes points in quadrant i.
it includes points in quadrant ii.
it does not include points in quadrant i.
it does not include points in quadrant ii.

An odd function has the property that -f(x) = f(-x) in other words, is is symmetrical w.r.t. the origin.

Quadrants are numbered counterclockwise, so f(x) will have points in quadrant II if it also has points in IV. We can't know for sure if it has points in the other quadrants. For all we know it has points in all 4 quadrants. (E.g., f(x) = sin(x) would qualify)

So only statement B is certain.