Match List I with List II:

List - I (Nature of Substances)	List - II (Effect)
A. Allergen	I. Cancer-causing substances
​B. Carcinogen	II. Substances that inhibit fetal development
C. Mutagen	III. Substances that activate the immune system
D. Teratogen	IV. Substances that damage or alter genetic material

Select the correct answer from the options given below:

Correct option is D

Option (d) is the correct answer. Here’s the correct matching:
A. Allergen - III: Allergens are substances that activate the immune system, often causing allergic reactions.
B. Carcinogen - I: Carcinogens are substances that cause cancer.
C. Mutagen - IV: Mutagens are substances that damage or alter genetic material, potentially leading to mutations.
D. Teratogen - II: Teratogens are substances that inhibit or disturb fetal development, leading to birth defects.
Information Booster:
Allergens: Trigger the immune system and can cause allergic reactions like sneezing, itching, or more severe responses.
Carcinogens: Substances like tobacco smoke or asbestos, which increase the risk of cancer.
Mutagens: Often chemical or physical agents (like radiation) that cause changes in DNA.
Teratogens: Include substances like alcohol or certain medications that cause birth defects during fetal development.