fix grammar
In regard to the modification, it is suggested to change the test variable to enhance all pieces of evidence. To refine research question and experiment, different type of childhood vaccine will be considered the process of creating reliability repeating testing trials or change the test variable of effect of measles on transmission rate will then enhance the validity of the outcome improved upon by modify addressing limitations.
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In regard to the modification, it is suggested to change the test variable in order to enhance all pieces of evidence. To refine the research question and experiment, different types of childhood vaccines will be considered. By implementing a process of creating reliability through repeating testing trials or changing the test variable of the effect of measles on transmission rate, the validity of the outcome will be improved upon by addressing limitations.