TRICARE was previously known as....

A.CHAMPUS
B.CHAMPVA
C.CMS
D.CHIP

To determine the previous name of TRICARE, you can use a search engine and look for information about the history of TRICARE. Here are the steps to find the answer:

1. Open a search engine like Google, Bing, or Yahoo.
2. Type in "previous name of TRICARE."
3. Look for reliable sources such as government websites, trusted news sources, or official TRICARE websites in the search results.
4. Click on the relevant source that provides information on the previous name of TRICARE.
5. Scan the content of the source for the previous name of TRICARE.
6. Based on the information found, determine the correct answer.

Based on the information provided, the previous name of TRICARE was A. CHAMPUS (Civilian Health and Medical Program of the Uniformed Services).