It is a good rule of thumb to remember that when preparing for a speech, you can never too much.
a. breathe
b. practice
c. visualize
d. say

B. practice, the answer would be that one conniver practice enough, because practice makes perfect 

To form soil, the two processes which must occur are erosion and weathering, so the correct answer is "soil formation is a continuous presses, but also one which takes a long time, it can sometimes take more than five hundred years for 1cm of soil to form.

The answer is d directness