PLEASE HELP ME ANSWER THIS Outline a heart-healthy “plan” for a person’s whole life: in other words, provide at least two pieces of advice appropriate for a person interested in heart health across their lifespan. Discuss advice appropriate for newborns or very small children; young adults between 18 and 24 years of age; someone in their 40s; and someone over 65. Provide at least one piece of age-appropriate advice specific to the interests, activities, and general health of an average person in each age group.

answer: - b cells

explanation: -

there are many types of white blood cells present in our body. one such class of white blood cells are the lymphocytes. the b cells belong to the lymphocyte class of wbcs. the b cells perform their action against the pathogen by producing specialised proteins called as antibodies. these antibodies are produced as and when the b cells encounter pathogens in response to the antigens present on the surface of the pathogen. these antibodies bind to the antigens present on the pathogen and then, target them for destruction by other cells of the immune system.

so, the b cells mediate their action by identifying the antigens present on the surface of the pathogens and then producing antibodies in return to mediate its effect.

Sorry  i don't understand can you rephrase that