1.  The operator used to get value at address stored in a pointer variable is
A. *
B. &
C. &&
D. ||

Answer: Option A

Explanation:

For example;
int *p; // creates a pointer to integer
int a=10//variable a has value as 10 and address as 2000
p=&a//here address of a(2000) is stored in p ie p is pointing to a
int b;//a variable
b=*p;//the pointer penetrates into a to fetch the value and stores it in b;
printf("%d",b);

output:10

Because you can get value stored at any address only through *.& is used to retrieve the address value.!