Question

which country is highlighted? map of europe with a country highlighted, and options: denmark, russia, estonia, iceland

Explanation:

The highlighted country is in the Baltic region. Among the options, Estonia is located in the Baltic area (between Latvia and the Baltic Sea, near Finland). Denmark is in Scandinavia but more southern - western, Russia is much larger and not the small Baltic - region country here, and Iceland is an island in the North Atlantic. So the highlighted country is Estonia.

Answer:

Estonia