The correct answer is:
The children are wearing loose clothing. The children are exposed to dangerous machinery. The children are not wearing any protective gear.
These are some of the dangers these child workers were exposed to.

Back then, the answer would be A. But, if this was a MODERN question, the answer would be D.
Answer:
Below
Explanation:
The immediate causes for the war included a series of escalating steps taken by the Arabs: the concluding of a Syrian-Egyptian military pact to which Jordan and Iraq later joined, the expulsion of the UN Emergency Force (UNEF) from the Sinai Peninsula and the concentration of Egyptian forces there.