what are the two most important chess openings

The October 2017 issue of Chess lists the top twenty openings compiled from a list of 4192 August games where both players were rated over 2400 Elo. One can not take position on this list too seriously because it is greatly influenced by how the openings are grouped. For example, all the Retis are grouped together, while English is separated into 1...c5, 1...e5, etc. Nevertheless, for what it is worth, some of the list entries are: 271 Retis, 232 King's Indians, 172 Caro-Kanns, 165 Nimzo-Indians, 126 Najdorf Sicilians, 126 Slavs, 118 declined Queen's Gambits, 100 Queen's Indians, 98 1...e5 Englishes, 94 1...c5 Englishes, 93 Kan Sicilians, 81 Tarrasch Frenches, 77 1...Nf6 Englishes, 73 Guioco Pianos, 67 1...e6 Englishes, and 66 Moderns

good

Clearly QGD and Ruy Lopez or Giuoco Piano(nissimo).

It depends on your view angle. 

Check out this article: http://chesswinning.com/10-best-chess-openings/

(thats not the KID yet, black has d5, transposing into a Grunfeld (a clearly better option IMO), for KID you need 0-0 e4 included)

Depends on the player.  If they never play 1.e4 or 1...e5 or 1...c5 then they don't need the Sicilian, Ruy Lopez, or the Italian Game.  But then they have to fill that hole with something.  

QGD no matter what.

Krusty the Clown?

Teh bongcloud opening and the transvestite. A good third is Santa Claus opening.

just like ? can you explain little more ? 

More concretely, it depends on your criteria of "importance".  For instance, one can say that the chess is just a game (with no real consequences) so the importance of any opening is equal to zero. 

i chose QGD and Ruy Lopez (or Giuco Piano-nissimo) because these openings give so many concepts that if u can understand and master those, u will understand many about chess in general.

The Najdorf and the Najdorf

well i follow my instinct . i play white c4 mostly in all of my games. for e4 i play c5 and to reply d4 i play whatever comes into my mind and as black to reply c4 i play c6 .