The natural world and its phenomenon
The correct answer is the option C:
- C: Today the phrase "Achilles´ Heel" refers to a weakness that can lead to downfall. This refers to the story of a powerful Greek Warrior who had been submerged in the in the river Styx during childhood.
Because this option is the one that describes better the meaning of the phrase "Achilles´ Hell".
I can’t see the paragraph
In colloquial English 'them" would be acceptable
In formal English 'they' is used accompanied by the corresponding auxilliary verb
So, you could also say Is everyone who works in this store as helpful as they are ?
I believe she is the maid of Atticus...