Answer:
a. each asset item is stated as a percent of total assets
Explanation:
A vertical analysis consists of showing the relative sizes of the different accounts in reference to which is considered the most important amount in a financial statement. In the Balance Sheet, this amount is Total Assets, and in the Income Statement is Revenues.
It's very helpful to better understand the composition of a financial statement and key trends over time. It´s also used to compare two or more companies of different sizes.