____ stock- and commodity-trading is the practice of allowing a computer program to make decisions about what shares to buy and sell.

A presentation saved in Slide Show format will have a ________ file extension

A) .ppsx B) .pptm C) .potx D) .pptx

The Return marks the point where the computer returns to the part of the program that __________ the module.

Fill in the blank(s) with the appropriate word(s).