Answer:
a
Explanation:
all others are preventing something but this one is fixing its structure also means maintaining.
There are basically two main types of cells: prokaryotic and eukaryotic. The former is simple and while the latter is a complex type. So, the correct cell type for each description below are as follows.
no distinct nucleus: prokaryotic
can only be single-celled: prokaryotic
can either be single- or multi-celled: eukaryotic
In prokaryotic cells DNA is found in the Nucleoid (A)
Men are most likely to get ADHD than females
