The predominant antibody of a typical primary immune response is IgM. Thus, option (b) is correct.
What is an antibody?
The protein the immune system of the body makes when it recognizes dangerous chemicals, known as antigens, is referred to as an antibody. These undesirable chemicals are removed from the human body by antibodies that bind to them.
The immune response is first challenged and for some non-peptide antigens, the term IgM is the predominant antibody. On successive interactions with the antigen, IgM may be the only isotype of antibody released.
As a result, the predominant antibody was the response of IgM.
Learn more about antibody, here;
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Your question is incomplete, but most probably the full question was.
A. freshwater fishing.
my reasoning:
Inside the Middle East, most countries have large supplies of oil, (which helps make the countries rich as they are today because of oil demands), which takes out the options C & D. The Middle East, is located within the Sahara desert, and so can contribute to desert research (B) as well.
So A, is your most logical choice.
hope this helps
Answer:
The cost of housing was the most commonly selected reason for why residents chose to live in their neighborhood in the national poll (28% of respondents). Being close to friends and family was second (28%), and the size and type of housing available was third (22%).
Hope I helped you out!
