Final answer:
In John Steinbeck's 'The Pearl', Coyotito's unexpected movement that causes the scorpion to strike is not mentioned in the provided texts. This event is a key incident in the book, initiating the story's central conflict.
Step-by-step explanation:
The unexpected movement that causes the scorpion to strike Coyotito in The Pearl is not detailed in the passages provided above. However, it is a key plot point in The Pearl by John Steinbeck, where the strike occurs when Coyotito, the infant son of the main characters Kino and Juana, makes an inadvertent movement that draws the scorpion's attention, leading to the venomous strike. This event sets off the central conflict of the narrative, as Kino finds a valuable pearl that he believes will secure his family's future, only to attract envy and malice from others.