The spider making the noise is the main
        
             
        
        
        
Smidgen means a small amount of something.
noun , informal
a small amount : bit <a smidgen of salt> <a smidgen of common sense>
        
             
        
        
        
The prepositions in the sentence are;
A preposition is a part of speech that is typically used before a noun phrase, a noun, or pronoun to indicate a direction, location, or duration of something. They also show the relationship between words in a sentence. In the sentence given above, the prepositions are; through, about, and for. 
'Through' indicates the way critical thinking can be used to obtain a positive effect. 'About' is another preposition that means 'concerning' or 'regarding'. 'For' is the third preposition that indicates the end result of something.
Learn more about prepositions here:
brainly.com/question/10595540
 
        
             
        
        
        
Answer:
It's the third option
Explanation:
<u>It's the third option because </u> <u> (which is 1 nitrogen gas) + </u>
<u> (which is 1 nitrogen gas) + </u> <u>(which is 3 hydrogen gas) = </u>
 <u>(which is 3 hydrogen gas) = </u> (<u>which is 2 nitrogen hydrogen gas) so thus it's the 3rd option</u>
 (<u>which is 2 nitrogen hydrogen gas) so thus it's the 3rd option</u>
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<u>I hope that my answer helped you and I'd really appreciate it if you mark my answer the brainliest! :)</u>
 
        
             
        
        
        
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