The answer would be the 1st option.
- Folk Cronholm was spying for the Allied nations.
<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 D
(the verb is first rather than within the sentence)
