A term used for portal tombs is which of the following?

A. Flutings
B. Dolmans
C. Menhirs
D. All of the above

Dolmans

The term used for portal tombs is option B, Dolmans.

To determine the term used for portal tombs, we can examine each option provided:

A. Flutings: Flutings are vertical grooves or channels carved into architectural elements such as columns or pillars. This term does not specifically refer to portal tombs, so we can eliminate it as a possibility.

B. Dolmans: Dolmans are large, flat stones or slabs that are placed horizontally on top of upright stones to create a simple, chamber-like structure. This construction style is associated with portal tombs, making "Dolmans" a candidate for the correct answer.

C. Menhirs: Menhirs are tall, upright stones that are often found standing alone or in rows. While they are a type of megalithic structure, they are not specifically associated with portal tombs. Therefore, we can rule out "Menhirs" as a possible answer.

D. All of the above: This option would encompass all the terms, including "Flutings," "Dolmans," and "Menhirs." As we determined that both "Flutings" and "Menhirs" do not exclusively refer to portal tombs, we can eliminate "All of the above" as the correct answer.

By process of elimination, the correct term used for portal tombs is "B. Dolmans."