The reward that accrues to labour for participating in production is typically referred to as wages.

Wages are the compensation paid to workers for their physical and mental efforts in the production process.

It is a payment for the use of labor as a factor of production.

Other options such as interest, bonus, and profit are not specific rewards for labour participation in production.

Interest is compensation for capital, profit is the reward for entrepreneurship, and bonus is an additional payment that may be given to workers based on performance or other factors, but they are not directly tied to labour participation in production.

So, In summary, the correct answer is B. wage.