Which one of the following will be the second last

Solution

We can see that first five letters are same. The words Reconnoitre and Reconnaissance has sixth letters are same. So, seventh letter of Reconnoitre and Reconnaissance are O and A respectively. Reconnaissance will be the first word and Reconnoitre will be the second word. Now in Reconquer and Reconvene first five letters are same. So, sixth letter in both Reconquer and in Reconvene i.e. Q and V respectively. So, Reconquer will be the third word and Reconvene will be the fourth word. Reconnaissance → Reconnoitre → Reconquer → Reconvene