"<span>Individual interactions" is the one among the following choices given in the question that microsociology examines. The correct option among all the options that are given in the question is the fourth option or the last option. I hope that this is the answer that has actually come to your desired help.</span>
Microsociology is a branch of sociology that focused its study on the interactions made within a society on the smallest scale. This mean that it would examine individual interactions and how those interactions affecting the behaviour of the individuals involved.
The constitution ensures a smooth transition by designating a specific person for the job. If a president is unable to fulfill his duties, the vice president takes over the presidency.