Immunodeficiency occurs when the immune system is not working properly.
Treatments are available for many immunodeficiencies.
Treatments are available when the immune system is not working properly.
What is available when the immune system is not working properly?

(1) treatment
(2) fever
(3) bacteria
(4) intense drugs
(5) Energy.
(6) magic potions
(7) the cure
(8) Energy