A cookie(s), on a website, is a small text file that is placed on a computer by a website. Most websites online use cookies to track data. A person can turn off their cookie tracking by going into the settings and turning it off. You can directly choose to not have cookies placed on your computer or phone. However, some website does require the cookies to be enabled before you can visit the website. The correct answer will be C.
Runs out of memory
has uninitialized variables
uses undefined behaviour
It helps reveal the flow of execution of your program, including results of in-between evaluations. In other words, you can see what your program is doing, and why it takes the decisions it is taking.
If something unexpected happens, the trace will show you the sequence of events that lead to it.
Nand stands for "not and". The truth table for a nand is:
a b | a nand b
0 0 | 1
0 1 | 1
1 0 | 1
1 1 | 0
Hopefully this helps you answer your question.