What does a controller control? a. the ports for removable storage devices b. the interface between the hard disk and the system bus c. the interface between the hard disk and the operating system d. the electronic circuits that control the platters?

b. the interface between the hard disk and the system bus

Explanation:

A controller, in the most basic computing terms, is a hardware chip or card that falls between two hardware components. Thus, a computer’s motherboard will always have a controller that interfaces with RAM, hard disk, DVD drives or other hardware components. Being an interface between two hardware devices facilitate incoming and outgoing commutations. Option B therefore, is the correct answer because it interfaces between the hard disk and sytem bus, which are both hardware components.

solution:

the right option is a

to adding   a new row to a table we   have to do process last table cell and pressing tab.

this is the process to add new row in the cell:

* to add a row below the cell, click insert below in the rows and columns group.

thus this is the required right answer.