QUESTION: Fix punctuation: Performers act as guides assisting the audience through their ceremonial journey
ANS: Performers act as guides, assisting the audience through their ceremonial journey.

QUESTION: Fix punctuation: Certain cookies are necessary to provide our Online Offers in a secure manner
ANS: Certain cookies are necessary to provide our Online Offers in a secure manner.

QUESTION: Fix punctuation: Do not use the iPod on Windows system which doesnt have compatibility for it
ANS: Do not use the iPod on Windows system which doesn't have compatibility for it

QUESTION: Fix punctuation: Perhaps its most notable characteristic is an unwavering concern for rigour and precision the detailed studies that constituted the bulk of his output were in Tannerys view only a necessary stage in the elaboration on much broader syntheses that would ultimately lead to a comprehensive history of science that he himself could openly initiate
ANS:
Perhaps its most notable characteristic is an unwavering concern for rigour and precision. the detailed studies that constituted the bulk of his output were, in Tannery's view, only a necessary stage in the elaboration on much broader syntheses that would ultimately lead to a comprehensive history of science that he himself could openly initiate.