Answer:
See explaination
Step-by-step explanation:
Square bracket notation is useful when working with objects.
When working with bracket notation, make sure the property identifiers is a String. They can include any characters, including spaces. Variables may also be used as long as the variable resolves to a String.
Below is a representation of the bracket for the question;
a)
racer[0] = 22;
b)
img[1][0] = 89;
c)
img[15][2] = 64;
d)
rgb_img[5][0][1] = 320;