I can not agree with the previous commenter. In the light of recent scientific discoveries, bioengineering is much more promising than sociology. I also know this because I recently wrote a scientific work on sociology, namely, how this science is now developing in our country, and in the world as a whole. https://edubirdie.com/blog/70-sociology-research-topics Here on this site, you can find many topics of sociological research that say that now people are not so interested in what is happening outside in society, like what happens inside the human body. That is why I would advise you to choose bioengineering.