Which of these statements is true?

A. There was a causal relationship between economic chaos and

increased food production.

O

B. There was a causal relationship between submarine warfare and

new shipping technology.

O

C. There was a causal relationship between World War I and a

worldwide outbreak of disease.

O

D. There was a causal relationship between medical advancements

and the influenza outbreak.

The correct option to the question is A. There was a causal relationship between World War 1 and a worldwide outbreak of disease.

Explanation:

Causal relationship is something that happens between two different events, when one happens, it causes the other to happen. For example, when there is high temperature in a place, it may cause more people to buy ice creams to cool off.

In this passage, the word Pestilence was used which is the same as disease. It was also said that it is an "old follower of walfare", which means that any place war takes place, we would likely see disease outbreak happening in that area after the war and this has been happening this way for a long time now. These details can be clearly seen in the first sentence of the passage.

Reading through, there was no area in the passage where it was mentioned that medical advancements caused influenza. What was talked about was that medical science killed off any disease affecting people at that time. Afterwards, influenza started, but it does not mean it was medical advancement that caused influenza. That makes option B, incorrect.

Also, there was no section of the passage that talked about economic confusion or disorder (Chaos) causing more food to be produced. This makes option C, incorrect.

Submarine warfare was not said to be the reason for the new shipping technology that was seen. There was not mention of any such relationship in the passage and that makes option D, Incorrect