The correct options are
A It helps to fight against diseases.
B It regulates growth and development.
C It helps to repair damaged tissues.
D It helps to perform physical activities.
The vital components of food such as carbohydrate, protein, fat, vitamins, etc., are known as nutrients.
These nutrients are vital for growth and development and are utilised by the organisms to generate energy. This process is called nutrition. Energy generated is utilised by an organism to perform various activities such as walking, running, swimming, etc., which if it leads to the wear and tear of the tissues, is followed up by their repairing. They are also utilised to boost the immunity of the body and fight against diseases.