Find the synonym of the underlined word. Price, ease of maintenance, a guarantee of accuracy, and appearance are important when we buy a watch. 

Correct choice is C) 

'Guarantee' means a proper assurance (commonly in writing) that positive situations can be fulfilled, specially that a product can be repaired or changed if now no longer of a special quality. "we provide a 10-12 months assure towards rusting" In this context, "Price, ease of maintenance, assure of accuracy and look are crucial while we purchase a watch", 'assure' manner assurance or promise. Hence, choice C is accurate and the others aren't due to the fact they do now no longer offer the perfect information.