Which sentence helps explain what genetic modification is?(A)Humans have been changing the shape and color of fruits and vegetables since farming began about12,000 years ago.(B)The public viewed genetic engineering as suspicious, even though humans have been changing plantsfor thousands of years.(C)The practice of growing one and only one kind of crop with the same genes is called monoculture.(D)Unfortunately, this also means that each generation is the same, so the plant can't adapt to protect itselffrom diseases and pests.5

(A)Humans have been changing the shape and color of fruits and vegetables since farming began about12,000 years ago.

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.