Similarly, the Windows server OS can run regular workstation applications such as MS Office or Adobe Photoshop. Why is this a bad idea? Can you find a situation where it might be appropriate?

It affects the system speed

Explanation:

The normal windows server OS can run the regular workstation applications like the MS Office or the Adobe Photoshop. Photoshop is an editor that have one of its function as being an editor that helps to edit the picture itself by changing the pixels or edit anything in the image.

On the other hand, Ms Office would help to crop or resize or adjust the brightness etc.

When it comes to cropping or reducing/increasing the brightness of the images then Office is of agreat help as it is free where as for photo shop advanced editing to the images can be done.There is the situation where both needs to be used.

Also running both the application on a egular workstation would make the system slow and also both the applications would not be required at the same time at many times.

given the options, i would say your best bet is c. the modem supports up to 56 kbps, which is too low for video streaming. dial up modems use actual phone lines, which only can go up to 56 kbps as that's more than sufficient for traditional phone calls. this is also the reason why when a dial-up modem connects, you hear all those sounds. it's literally using the phone line to establish a connection.