Xavier Aptitude Test 2011 Paper

Travelling is my hobby. Today in Himalayas, as I drag my feet through the _________, I cannot but think of the same time last year when I was negotiating the thick __________ of the Ganges delta or for that matter the time I spent with my children _________ about in the waters of the Arabian Sea.
The option that best fill the blanks in the above sentence would be :