Answer:
hello! your answer is c! i'm sorry this was late, i just saw this question!
(you don't have to mark me brainliest) just have a great day!
Explanation:
Because they have been stuck in a caravan??!!!
Im assuming this is true or false? so True.
<span>The right answer is "Genetic".
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</span><span>This is because genetic makeup determines the response of the immune system to certain diseases. That is, some people will be naturally more immune and tolerant to pathogens as compared to other people.
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</span><span>The genetic background refers to the biological basis that we inherited from our parents. His main area of study are genes; In the genes, it is found all the information of the structure of the cells that make up the body of a person. Variations in these genes are what determine the differences in living beings.
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I hope this information can help you.</span>
