A. It is difficult to tell whether an implant would be possible without knowing how much space there is for an implant. There needs to be enough space between the roots of adjacent teeth and there needs to be enough room for the crown.

You may need braces to move the adjacent teeth to create space.
There is always the option of braces or veneers  to align all the teeth so that you don’t have to extract the tooth that is pushed back

The best thing to do is have a consultation with an implant dentist to find out what your options are

Kind Regards