Suppose there is a class airconditioner. the class supports the following behaviors: turning the air conditioner on, off, setting the desired temperature, and telling the previously set temperature. the following methods are provided for these behaviors: turn_on and turn_off, which accept no arguments and return no value, set_temp, which accepts an int argument and returns no value, and get_temp, which accepts no value and returns an int. there is a reference variable my_ac to an object of this class, which has already been created. there is also a variable called current_temp, which has already been initialized. invoke a method using the reference variable which returns the previously set temperature of the air conditioner, and store the returned value in current_temp.

The answer for  the test  is d. 20.7

(1)correct answer is d.the others are just bad syntax.by using the keyword "new" and int[] together, you create a new integer array object in memory. whenever you want to create an object without using array literals, you must use new. (by array literals, i mean a line of declaration code like int[] x = {4,6}; where you literally specify an array without using new. an array literal can only be used in the same line as declaring the array.)(2)correct answer is c. it is the only choice that returns an array and properly takes in an array reference as an argument.choices a and b do not return an array; they respectively return void (nothing at all) and a primitive double, which is not a double array.choice d has invalid syntax. looking at it, it won't properly accept any array reference you pass into the method.(3)correct answer is a.x is already defined.choice b only returns an index of the array.also, in any other method, you wouldn't write the type next to the thing being returned. choices c and d are invalid.(4)correct answer is c.choice a only accepts one.choice b requires at least two numbers.choice d only takes in an integer array reference, not integers.(5) correct choice is d.by specifying that the first argument can take in any number of ints, java will assume everything you input into the method will be an integer.theoretically it will never reach that string argument, no matter how many commas you put. this is illegal; the java compiler will complain. i don't think it'll even recognize it as a method header.

It means that it is rusted or broke oh and it meand that it could be contaminated with oil or brake fluid