Final answer:
The word 'whisk' matches option 'c) beat' as it refers to the stirring or beating action in cooking, not the other options provided.
Step-by-step explanation:
The word whisk can have multiple meanings, but in the context of this question, the correct match for whisk would be 'c) beat.' This is because 'whisk' can refer to both the action and the tool used in cooking to stir or beat ingredients quickly. A 'fly-whisk' is a tool used to swat insects and therefore is not synonymous with the verb beat. 'Brush' generally refers to an object with bristles used for sweeping, painting, or grooming. 'Flush' as a verb means to cleanse by causing water to flow through or to become suffused with color, so it does not match the meaning of 'whisk' either.