Question

Adrian caught a virus while staying with his grandmother. A few years later, his mother and sister got the same virus. This virus could spread through touch and direct contact. However, Adrian did not contract the virus this time, even though he was living with his mother and sister. Why did he not get sick?
Adrian’s adaptive immunity remembered the antigens from the virus and gave him lifelong immunity to it.
Adrian’s innate immunity remembered the antigens from the virus and gave him lifelong immunity to it.
Adrian’s skin layer recognized the antigens and attacked them, which prevented the occurrence of the virus again.
Adrian’s innate immunity identified antibodies specific for the virus and targeted them against the antigen.
Adrian’s adaptive immunity produced a higher amount of specific antibodies for the antigen, preventing the virus.
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Answer 1

Answer:

The most appropriate answer would be the first option.

Adaptive immunity is a part of the immune system which protects our body against infectious agents with the help of  B lymphocytes and T lymphocytes.  

It is characterized by its memory that is, it creates the memory of a lifetime for particular antigen or pathogen once it has come across.

As Adrian caught the virus a few years ago his immune system had developed a memory for the virus.  

So, as soon as his body contracted the same virus his body recognizes it easily and produce quicker and higher amplitude immune response against it.

Answer 2

Answer:The first one.

Explanation:

His immune system was already contracted to the virus before, so it was able to prepare for the same virus to try to attack the immune system again with cells.