"Most often, pet allergy is triggered by exposure to the dead flakes of skin (dander) a pet sheds. Any animal with fur can be a source of pet allergy, but pet allergies are most commonly associated with cats and dogs."
Explanation:
"Most often, pet allergy is triggered by exposure to the dead flakes of skin (dander) a pet sheds. Any animal with fur can be a source of pet allergy, but pet allergies are most commonly associated with cats and dogs."
When a person inhales or comes in direct contact with a pet’s fur, dander, or saliva. The immune system which protects us you from infections, produces a protein, called antibodies, to fight off the foreign bodies. Sometimes, our immune system overreacts to certain substances like animal's fur or feather causing allergic reactions.
The right answer has to do with birth defects and in this case the defect wouldn't be hereditary nor genetic so i think the best answer is (D) underdeveloped lungs