Among all the given options the important habits of mind for a scientist are -
a) reasoning - A scientist must use his/her logical thinking to find solutions to unanswered question
b) Problem solving- Problem solving approach is essential as only questioning is not going to help out. If something is not correct or not yet explored then some one has to solve or answer it.
c) Creativity - A creative person can find all possible ways to find the solution of any problem
d) Skepticism- Doubting on already existing facts or theories allows a scientist to revisit the reasoning established earlier. This may bring out some thing new
Reasoning - as a cause that it can be used to think about logical way to solve a problem.
Problem Solving - Having different methods on how to solve problems, and having a very thoughtful and good idea on what to do.
Creativity - How to use resources, skills and methods to create tools, theories, laws, equations etc.
Skepticism - I'm not quite sure about this one, but I would put in on because it's helpful, because it can create investigative and creative questions which then could be experimented on and get a solution to.
vaccines have antigens of particular disease causing pathogen which are injected in our body and our body produces antibodies against them.by antigen antibody reaction they destroy the antigen which are cause of diseases and antigen are stored in memory T cells and macrophages.