<span>A) We cannot walk alone.
I would also recommend that next time you put some spaces between the question and answers next time, it makes it very hard to read. </span>
<em>basically im is used for not and here impossible means that anything which is not possible .. here main root or word is Possible because im is only a prefix .. this prefix 'im' changes the meaning of possible and makes it impossible :)</em>
Answer:
A parcel
Explanation:
Def of mail is letters and packages conveyed by the postal system.