Directions: Study the following alphanumeric sequence carefully and answer the question given below.

% R 4 D # 8 N 2 @ T 9 $ 6 K & H 5 * 1

Which of the following elements is 6th to the left of the 15th element from the left end?

The correct answer is @.

Step-by-step explanation:
1. First, examine the given alphanumeric sequence from left to right:
% R 4 D # 8 N 2 @ T 9 $ 6 K & H 5 * 1

2. We need to find the element that is 6th to the left of the 15th element from the left end.

3. When calculating positions measured from the left end, moving left from a given position requires subtracting the number of steps:
Position from left end = 15 - 6 = 9th element from the left end.

4. Now, count the elements step-by-step from the left end to find the 9th element:
1st element = %
2nd element = R
3rd element = 4
4th element = D
5th element = #
6th element = 8
7th element = N
8th element = 2
9th element = @

Thus, the 9th element from the left end (which is 6th to the left of the 15th element) is @.