One Word Substitution

There are two columns, column 1 contains a set of words & column 2 contains a set of sentences. Write the number of sentence from column 2 in the boxes given after the words in column 2 to match the write that defines the sentences of column 2 completely.

Column1		Column 2		Correct Answer
knowledge		1 -	a display dictated by vanity and intended to invite applause or flattery.
Opportunity		2 -	not copied nor produced by imitation.
Optic		3 -	Opportunist one who takes advantage of circumstances to gain his ends.
Optician		4 -	holding the commonly accepted faith.
Optimist		5 -	one who makes or deals in optical instruments or eye-glasses.
Orator		6 -	one who delivers an elaborate or formal public speech.
Origin		7 -	one who views that everything in nature and the history of mankind is ordered for the best.
Original		8 -	beginning of that which becomes or is made to be.
Orthodox		9 -	pertaining to the eye or vision.
Ostentation		10 -	favorable or advantageous chance or opening.