the human cost of wwi was\n5 million casualties.\n15 million casualties.\n30 million casualties.\n40 million…

the human cost of wwi was\n5 million casualties.\n15 million casualties.\n30 million casualties.\n40 million casualties.
Answer
Brief Explanations:
World War I resulted in approximately 40 million military and civilian casualties due to combat, disease, and famine.
Answer:
40 million casualties.