This is your code. >>> A = [21, 'dog', 'red']
>>> B = [35, 'cat', 'blue']
>>> C = [12, 'fish', 'green']
>>> e = [A, B,C]
How do you refer to 'green'?

e[2][2]
e[2, 2]
e(2, 2)
e(2)(2)

answer; i believe that the correct answer is (calculated field);

answer; insolated i/o uses separate memory space,and on the other hand memory mapped i/o uses memory from the main

it is much more convenient for the consumer to order something online, rather than going to a store. it saves them time and money for them, especially if that item is not accessed easily.