Answer: If they are not complementary, then the light passes through the object or gets reflected.
Explanation:
<span>The language family spoken
by the most people in sub-saharan Africa is the Niger Congo. 95% of the people
in Subharan Africa speak the language. It is generally considered to constitute
the world’s largest language family in terms of distinct languages, although
this is complicated by the ambiguity about what constitutes a distinct
language.</span>
