This is the relevant information: Cross-country skiing has been contested at the Winter Olympic Games since the first Winter Games in 1924 in Chamonix, France.
This justifies what answer for what question? Q & A:
Passage: Cross-country skiing has been contested at the Winter Olympic Games since the first Winter Games in 1924 in Chamonix, France. The women's events were first contested at the 1952 Winter Olympics.

Question: Based on this passage, when did cross country skiing become an olympic sport?
the first Winter Games in 1924