The febrile response is meticulous output from infectious diseases that cause fever. This response occurs mainly from hyperthermia in the body due to fever.
The other terms such as pregnancy or clogged sinuses do not induce any febrile nature in the person.
Thus, the options (a), (d) and (c) are incorrect.
The febrile response is meticulous output from infectious diseases that cause fever. This response occurs mainly from hyperthermia in the body due to fever.
Therefore, the correct option is – b. having a fever