Answer:
The correct answer is option D.
Explanation:
Biofilms are a aggregation of one or more than one type of micro organisms such as bacteria that can be found growing on various surfaces.
Other than bacteria, there other micro organisms like fungi and protists also form biofilms. Biofilm is a combinedly packed community of the bacterial population that allows them to live in favourable condition.
thus, the correct answer is - option D.
