In a monopsonistic labor market,the employer will maximize profits by employing workers up to that point at which:

A) the difference between the wage rate and marginal resource (labor) cost is at a maximum.
B) marginal revenue product equals marginal resource (labor) cost.
C) the wage rate equals marginal revenue product.
D) the wage rate equals marginal resource (labor) cost.

In a monopsonistic labor market, the employer has the power to set the wage rate due to a lack of competition in the labor market. However, the employer still faces a marginal resource cost (MRC) for each additional worker they hire. The employer will maximize profits by employing workers up to the point where the marginal revenue product (MRP) equals the MRC. This is because if they were to hire any additional workers beyond this point, the MRC would exceed the MRP, resulting in a decrease in profits. Therefore, choice B is the correct answer as it accurately describes the point at which the employer will maximize profits.