The answer to this question is Prototype.
This concept could take form in all field of technology. Prototype exist after several trial and error that being done in order to perfecting that concept. Companies or researchers usually use the prototype to in order to find a final glitch/bug in a certain concept before releasing to the masses.
Answer:
4 is a
5 is b
Explanation:
a primary source is someone who was there at the time but a secondary source is someone who wasn't.
hope that helps!xx
B because it is the only word meaning cause and effect
Answer:
the Open Web Application Security Project (OWASP)
Explanation: