Answer:
It is a land of unparalleled charm and beauty, which it's trackless desert of sun dunes in a dazzling rays of a tropical sun
It indicates that Huck frequents places perhaps grocery stores where the conditions are not sanitary what with "sickly eggs and rotten cabbages and dead cats" in other words, Huck cannot afford to frequent fancier shops or fancier homes because he is poverty stricken and used to such sights.
B- it shows how all people long to learn and grow