1. PARTA: Which statement best expresses
the central idea of the text?
O A Vaccines can be a dangerous way to
protect the body from diseases, as you
have to initially expose the body to
disease.
OB Vaccines are not necessary to protect
against diseases, as the body will
automatically remember certain
diseases and protect against them.
O C The immune system struggles to
remember viruses that it has
experienced and needs the help of
vaccines to make memories of them.
OD A vaccine is developed by familiarizing
your body with a pathogen so that it can
recognize it and keep it from spreading
within you and to others.

OD A vaccine is developed by familiarizing  your body with a pathogen so that it can  recognize it and keep it from spreading  within you and to others.

Explanation:

Vaccination is being practiced mainly to counter react with the virus and not let it to spread all around with oneself or to other bodies as well. When germs, bacteria or viruses,  come to our the body, they attack and multiply. This then cause us  infections due to their prolonged invasions.The immune system uses  Blood which contains RBCs  which carry gase like oxygen to different tissues and organs of our body, but this is not sos enough and hence, for fighting this havoc, external Vaccines help develop immunity by imitating an infection. This  develops immunity power and boosts up the production of antibodies which helps in fighting with the viruses.

i would say b. good luck!

are you kidding? from that description of two mansions, you can't figure out which one is bleak and desolate? maybe you should consider looking those words up in a dictionary, if you don't know what they mean already.