What is the array means?

Answer 1

array simply is a collection of data, one variable that stores multiple data, and you can access each data by its index

Answer 2

you can determine array variable by creating an empty array
arr = [ ]

Answer 3

array is the collection of the similar data items. data items may be anything like integer float etc.

Answer 4

an Array is like a group so like

Cars = ["Honda", "Toyota", "Cadillac", "Lincoln"]
each object in an array is known as an Element

and im pretty sure in every language an array start from 0 when counting elements inside of an array

sort of like

Elements = ["Element 0", "Element 1", "Element 2", "Element 3"]

thats how you would count and select elements in an array