<u>Answer</u>:
The sentence "C: Tony picked up the tab for our dinner last night.
" is written using informal language.
<u>Explanation</u>:
Informal language means the one that is spoken casually and used amongst family and friends. It is not a formal language used in offices and businesses.
Option C has a word ‘tab’ which is a casual word for ‘tablet’. So, this is a sentence in informal language. Other options have all formal words used. For example, ‘detoured’ in option A. Option B refers to fire drill. Option D refers to the menu that was ‘impressive’.
You should place commas around a phrase the at adds additional information to the sentence, but which is not necessary.
1)<span>Tanna president of the National Honor Society truly enjoys volunteer work.
this part is not necessary, so commas are required before and after it
2) The old house, that my father grew up in, is being completely renovated.
here the commas are unnecessary! that's because we need the information in boldface to identify the house
4) </span><span><span>My sister, who is a waitress at Billy’s Big Burger Shack, is sixteen years old.</span>
this is a correctly punctuated sentence - the information about being a waitress is additional.
5) The bird that built a nest in the oak tree, appears to have an injured wing.
here either the commas should be removed, or another comma added after "bird"
</span>
Answer:
Indeed, diamond is the hardest material in the world. Material hardness is a property determined by scratch resistance.
Explanation:
A substance can only be scratched by something of equal or greater hardness. Therefore, only a diamond can scratch another diamond. Hope this helps! :)
