Since Ashwini’s rank is the same from both ends, Ashwini is ranked 13th.

Since Reema is ranked 16th from the bottom, she is ranked (25 – 16 + 1)th i.e. 10th from the top.

Since Reema and Ashwini interchange their positions, now Reema is ranked 13th from the top and Ashwini is ranked 10th from the top.

Now, Ashwini interchanges her new rank with Shivani.

Hence, Shivani is ranked 10th from top and Ashwini is ranked 7th from top.

Hence, Ashwini’s rank from bottom = 25 + 1-7 – 19th from the bottom.

Hence, option d.