B. to tell the audience how to choose books to read.
Explanation:
it explains that students normally will choose books that teachers want them to read or that friends recommend then to read. In this short speech it it gives you a suggestion to use a technique called P.I.C.K. to make it easier for you to choose a book of your liking. Also in the whole short speech it talks about choosing books and none of the other options.
The soil named chernozem is a black colored soil found in Russia and has a high percentage of the humus contents that is 4 to 16% and consists of the folic acid and phosphorous and the ammonia.
Thus is very fertile soil and has a high agricultural yield and this soil consist of the high moisture storage capacity thus is supportive of the large agricultural cultivation.
