An archaeologist found this vase in an ancient Greek ruin during an archaeological dig. He worked with the historian who was at the dig. Together, they concluded that the vase belonged to an advanced ancient Greek civilization. This conclusion was based on the elaborate designs and paintings on the vase. The historian wants to conduct further chemical tests on the vase to know more about it. Based on this information, the vase is a ___source.

Primary

Explanation:

Primary archeological sources are those which present original documentation and evidence of the historical period or event which is studied. They are the original things that were produced in the period in question, and can directly tell historians and archeologists some valuable, raw, and direct information. They can be documents, letters, tools, weapons, etc.

The vase in question is an example of the primary document. It can well us the kind of pottery that was made during the period, the technique and design, what scenes were important to portray, and what materials were used. This data is something gathered from the object itself and from the analysis of it (as well as from future chemical tests). They are not subjects of interpretation but objective information.

Primary for sure

Explanation:

Dont get tricked here.  This is an artifact from that period of time, therefore its primary!

  b.

there are isolated pockets of farming, generally around rivers and oases, which are used for irrigation.