Correct Option :- (B) 2
Explanation :-
Eco RI is an example of six-cutter restriction endonuclease. It usually cleaves once in every 4096 bp.
(1/4)6 = 1/4096
Given length of DNA fragment= 10 Kb = 10000 bp Hence,
Probable no. of cleaving sites = 10000/4096 = 2.44