I think its D hope this help
B the services provided by the provider
Answer:Apple iOS. Apple's iOS is a popular operating system for smartphones. ...
Microsoft Windows. ...
Apple MAC OS. ...
Linux Operating System. ...
Real-Time Operating System. ...
Normal Operating System.
Explanation:
A. defragging your hard drive
Answer:
C) speech recognition software.
Explanation:
Software that translates the sound of human voice into text is called a speech recognition software.
In Computer science, a speech recognition software is a voice technology application or program which enables the conversion of human voice such as spoken language to computer commands such as text through the use of speech recognition algorithms.
Some examples of speech recognition software are HTK, Kaldi, Voice navigator, Julius etc.