Answer:
Lowest Level; Machine Language.
Explanation:
The lowest level of a computer is machine language, which are strings of 0's and 1's in bits, and it's possible to perform tasks at this level. It's however difficult to do and humans created <em>Assembly</em>; a type of low level programming language to be readable, and converts to machine language so that we don't have to work in binary.
An array data type is similar to the structure of a row in a database table.