The subject is sponge because that is what is the main point of the sentence is.
The correct answer would be Option D
<em>the other term for this is <u /><u>sparsely populated..
</u>mean the area under observation does not have enough crowd or people... they may be audience in a cinema or public or citizens in a city...<u>
</u></em>
The answer is C, 23.5!
Hope this helps and please give brainliest!❤️
India became republic, Chinese aggression, indo-pak war
