Whats the diffrence between qualitative and qauntitative data

Qualitative data simply is the none numerical data which is simply obtained through observations and recording it. It talks about mainly quality. While quantitative data is the numerical data input. It talks about quantity, how much, how many and so on.

micro/nanoscale topography surface exhibits many prominent properties and is extensively employed in biomedical device, microfluidic device and energy device fabrication. additionally, the clinical applications of biomaterials can be largely expanded with of nanostructured surfaces.

well, i believe that the answer is 2. : 3