What do archaeologists term a group of objects, distinctive in style, that are usually found together within a specific geographical area and period of time?

Culture

The correct answer is Option (3) → Culture

In archaeology, the term "Culture" is used to refer to a group of objects that share distinctive characteristics in terms of style, material, and other attributes.

The Indus Valley civilization is also called the Harappan culture. Archaeologists use the term “culture” for a group of objects, distinctive in style, that are usually found together within a specific geographical area and period of time. In the case of the Harappan culture, these distinctive objects include seals, beads, weights, stone blades, and even baked bricks. These objects were found in areas as far apart as Afghanistan, Jammu, Baluchistan (Pakistan), and Gujarat.