Answer:
Blood agent
Explanation:
chemical warfare agents are of four major types:
nerve, blister, choking and blood agents
Nerve agents - it attacks the central nervous system and can enter the body through inhalation
Blister agents - it attacks skins and it is rapidly absorbed by the skin cells
chocking agents - as name denoted, it is related to the respiratory system.
Blood agent- it attacks the circulatory system of the body. it prevents the circulation of blood into the tissue and organs
