Answer:
PNG are for photos and exe are for programs
<?php and ?> will be the answer here. =)
Vectors are quantities described by both magnitude and direction
The answer would be a. pseudocode.
Pseudocode helps programs map out the logical pattern of how their program has to look. This means that by getting down the logical idea on how a program should look like, they will be able to implement this algorithm later on in the actual program. :)