The correct answer is A) British forces invaded Turkey at Gallipoli and helped the Russians repel German and Austrian advances.
The statement that best describes the situation on the eastern front in the early part of 1915 is "British forces invaded Turkey at Gallipoli and helped the Russians repel German and Austrian advances."
We are talking about one of the situations that were lived during the bloody World War 1. Historians identify this moment with two names: the Dardanelles Campaign or the Battle of Gallipoli. It started in February 1915. Meanwhile, on the western front, the war was stalled.