Glaciers are most likely to advance during summers.

The correct answer would be Late.

Explanation:

Glaciers are the dense layers of solid ice which are accumulated on the tops of the mountains, or on the surface of the mountains, or on the rivers, near the poles, and they are moving slowly under their own mass or weight. Glaciers are most likely to advance during the Late Summers. When the summer passes and the heat accumulates and reaches the inner surfaces of the snow, it starts to advance in the late summers due to the continuous exposure to the sunlight. They start to melt and move forward in the late summers and heavy melting usually lead to floods in the nearby towns and cities.

the answer is a) a shiprock was formed by igneous process