Science

Bachelors in audioligy and speech language pathology is the best ever professional course with only 4 years of study
BASP is a four-year degree course, is a multidisciplinary one with core subjects of audiology
Speech pathology, Language pathology and Psychology. This by itself is a professional course that makes you job ready. The institutions providing the course is less in number and it has vast opportunities in India and outside India. In my view Micro Biology Course which is also called as B.Sc. in micro biology is a common course and spans only over 3 years that doesn't make it a professional course. You will need to take a master's that would cost you another 2 years. Again, in this time an M.Sc. alone wudnt land u a job and u will have to go for Ph.D. SET or NET and really get through it to secure a bright future. With the large number of folks going for the course, the competition is also large. So overall I would suggest you take BASLP from a reputed institution for a bright career. I am assuming here that you have a good interest in both the fields that's discussed above. However if your passion lies in microbiology please ignore what you just read and go for it. Learning something you love is better than going after a course you hate but has scope.