Why are design patterns generally discovered and are not created?

 Design pattern are generally not created because it is difficult to verify that whether it is helpful for others to solving their problems or not.

The main aim of design pattern is that providing the software platform for communication. It basically describe the pattern of software design.

For creating a design pattern high efforts and struggle is required and we also realized that by adopting the similar technologies, they solve the same problem. Therefore, the design pattern are not created but discovered.  

a variable of array type holds a reference of object

array are commonly used in computer program to organize data so that a related set of values

array are using zero base indexing it start with 0.

all component of array have same type, two different types doesn't use in single array

if array are store 10 quantities its index value varies from 0 to 9.

it stores 1st quantity value in index value 0 and this process will same till index value 9.

the answer is d underlined.