Which Is the Best Way to Test the Hypothesis That

Multiple Choice

Which is the best way to test the hypothesis that C. is competitively excluded from the lower intertidal zone by B. balanoides?

A) Place individuals of each species in a jar and see which species survives.
B) Remove all B. balanoides from the lower intertidal zone.
C) Transplant B. balanoides to the upper intertidal zone.
D) Clear rocks in an entire area and document recolonization events.
E) Remove all C. stellatus from the upper tidal zone.