I think it is Serious. He needs to be serious about getting his School to accept uniforms or reject them. If he was humorous the School wouldn't take him seriously, if he was demanding the school would probably not want to be ordered to do something by one of their students. And if he was pleading it may work but over all him being serious about the topic would lead him to success.
The word in which the grapheme representing /k/ indicate that the word is probably from greek is "Cheque".
<h3>What is a grapheme?</h3>
In literature a grapheme refers to the smallest meaningful unit of a writing system that is contrastive.
In this above scenario, the word with the grapheme representing /k/ is "Cheque".
Learn more about Grapheme at;
brainly.com/question/21490395
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I think it’s C- another term for cavern walls. It might be D though. Stalactites and stalagmites are formations that happen on cave walls. I would go with C
Is there like a choice or just memory