Correct Answer is: (C) Cry protein
Bacillus thuringiensis is a naturally occurring soil bacterium which produces a crystal protein called as cry protein which acts a pesticide to **** insects.
BT toxin is used for mortality of insects. This cry protein dissolves in the gut of the insect, which have a high pH. Then these toxins invade the gut cell by creating holes in the lining of gut cells. These protein spills out of gut and cause ***** of the insect.
