When you need to switch on an electrical current at a remote location, would you use a relay or an amplifier?

Relay

Explanation:

They both perform similar functions in terms of control of voltage and current but the relay would be better because although it cannot produce a variable output like that of an amplifier, it has the capacity to isolate its input from its output.

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.

answer(d) sequencing and iteration;