How comfortable are you working with percentages? A. I can use proportions and equations to calculate the part, percentage, or whole of a number. I can teach someone else how to do this.
B. I can use proportions and equations to calculate the part, percentage, or whole of a number, but sometimes I make mistakes.
C. I can sometimes calculate the part, percentage, or whole of a number, but I often make mistakes.
D. Percentages confuse me.

his face was as red as an

even though there may be variations in human emotions over time, the poem “ a contribution to statistics” by wislawa symborska suggests that the only unchangeable characteristic is mortality.

the author poses a distinction between the approximate and non-approximate numbers which correspond to our need for certainty in life and the difficulty of achieving it. our efforts to measure the exact often fail because the world is not always clearly structured .the poem seems to imply   that the only thing that is certain and has an exact number is death.  

you need to add the passage to the question.