With Apt package manager libapache2-mod-wsgi
can be easily installed which is giving mod_wsgi-3.3
.
But I have seen at https://modwsgi.readthedocs.org/en/master/
Due to security issues in versions of mod_wsgi up to and including version 3.4, it is recommended that version 3.5 or later be used.
So what is most suitable version of mod_wsgi to use with django stack running on python 2.7
Django will work with any version of Apache which supports mod_wsgi.
However, you will most likely want to build mod_wsgi from source using the same python you are using to run django.