Whats the most important part of the chapter the ghost soliders in the things they carried

ieoiw what en the: enswer is b

the cost of attendance or coa is an approximate budget for the cost of attendance of the whole academic year. in order to calculate this, universities take into consideration many factors like room and board, tuitions and fees, books, transportation and personal expenses such as medicine, laundry, clothing. all these factors combined make up the final sum to the cost of attendance in each university.

sorry but can you explain the question because i didn’t understand it