Identify the source described as primary, secondary, or tertiary.

an original oil painting:

1. Primary

2. Secondary

3. Tertiary

An orginal oil painting is a Primary source (option 1)

Explanation:

Primary sources provide direct, immediate, first-hand information from people who had straight linking with it, the closest thing to what is being studied. Primary sources are frequently empirical studies, direct observation of what is being investigated, in the natural and empirical sciences. Examples can be: statistical data, results of an experiment, historical and legal documents, and of course, an original oil paiting.

Works of art, architecture, literature, and music (e. g., paintings, sculptures, musical scores, buildings, novels, poems) are all primary sources.