During World War I, why were the Germans unable to finish the war on the western front?

The eastern front consumed all their resources.

The western front became a stalemate.

The western front consumed all their resources

The eastern front was changed by trench warfare.

The western front became a stalemate.

Explanation:

During World War I, the Germans were hoping that the French invasion was going to go smoothly, and that they were going to be able to continue moving west. However, this proved more complicated than expected, and the war on the Western front quickly turned into a stalemate. There were several reasons for this, but the most significant ones were the introduction of chemical weapons and trench warfare. This meant that great damage could be caused to a army without an open offensive.

The answer would be B: The western front became a stalemate.