Question

Infectious diseases can be prevented by
A. Medicines
B. Proper food
C. Immunization
D. Exercise

Answer 1

Hint:- Humans, animals and plants are all susceptible to various types of diseases. Diseases are the conditions related to abnormal body conditions arising due to conditions such as injuries and harmful effects other than normal structural and functional state of an organism. The diseases are medical conditions which require proper diagnosis and treatments.

Complete step-by-step solution:-
Diseases can be described as situations that cause abnormal conditions in terms of normal functioning of the physical, chemical and other process in a living organism. All living organisms are affected by several types of diseases that can be caused by infections, pathogenic effects, malfunctioning of different structures etc. It also includes disturbances of the internal organ structure and derangement of other similar control mechanisms. The diseases are often medical conditions that need to be diagnosed through detailed information and treated with medicines.
Disease can be classified into several categories on the basis of a number of characteristics such as pathogenesis, symptoms etc.
Certain types of diseases are caused by pathogenic microorganisms known as microbes. This type of diseases caused by the microorganism such as bacteria, viruses, protozoa and fungi, are known as infectious diseases. The infectious diseases are also known as communicable or contagious diseases. These diseases are carried from one person to the other and can be transmitted through by various means such as hand to mouth contact, contact with the infectious or contaminated surfaces or through contaminated sharing of food and water.
The symptoms and signs of the infectious disease can vary from being mild to severe and complex. The infectious diseases such as common cold show symptoms such as cold, cough, runny nose, sore throat with fever. Other types of infectious diseases have several symptoms such as in HIV. Most infectious diseases respond to proper medication along with nutritious foods and proper rest.
However, the emergence and infection from the infectious diseases can be prevented through proper immunization. Immunization or vaccination helps to prevent several types of infectious diseases. Immunization is a process that helps a person to be resistant to several infectious diseases. Vaccination or immunization stimulates the body’s own defense system to produce antibodies to provide protection against the infectious diseases. In this process, a foreign molecule is administered into the body and it starts an immune response which enables the body to respond quickly in the situation of infectious disease.
Therefore, the correct option is option C.

Note:-
Infectious diseases are caused by the infection of microorganisms such as bacteria, viruses and other microbes. These types of diseases spread through various means such as contact with contaminated surfaces, or by food, water or through the infected person. The infectious diseases can be prevented as well as controlled by proper immunization. Immunization or vaccination provides an effective control of the infectious diseases by boosting the natural immune responses of the body.