Answer:
(a) asort()
Step-by-step explanation:
It is used in PHP.It is used to sort the associative array according to the values in ascending order.It is an inbuilt function in PHP.
arsort() function is used to sort associative array in descending order according to the values.
sort() is used to sort and array in ascending order while rsort() is used to sort the array in descending order.