The correct answer should be informal.
Informal level of language involves the use of slang words, and <em>cool </em>is a slang word, so this sentence cannot be formal by any means. It is also not general due to a slang word being used. Substandard language would mean that it is not grammatically correct, and this sentence is, so this is also incorrect.
Can you please mention the name of the story
It will be the second one I did that last year
There s an error in sentance 3
Answer:
its not the necklace so i assume its the bird on the stick
Explanation: