Question

in the early 1900s, what trend emerged concerning chemical weapons?
○ chemical weapons became deadly, as did other aspects of warfare.
○ chemical weapons disappeared and were replaced with less harmful weapons.
○ chemical weapons became ineffective as technological advances slowed.
○ chemical weapons remained in the form in which they were first introduced.

Explanation:

To solve this, we analyze each option:

• Option 1: In the early 1900s (especially WWI), chemical weapons (like mustard gas) and other warfare aspects (e.g., artillery, machine guns) became more deadly as technology advanced for warfare. This matches historical trends.
• Option 2: Chemical weapons did not disappear in the early 1900s; in fact, they were introduced and used (e.g., in WWI), so this is incorrect.
• Option 3: Technological advances in warfare were accelerating in the early 1900s, and chemical weapons were effective (causing casualties), so this is wrong.
• Option 4: Chemical weapons evolved (e.g., from early forms to more lethal ones) and did not remain static, so this is incorrect.

Answer:

A. Chemical weapons became deadly, as did other aspects of warfare.