Which buying situation is characterized by no modifications in the reordering of a product?

The buying situation that is characterized by no modifications in the reordering of a product is the straight rebuy. In a straight rebuy, a buyer is simply reordering a product that has been previously purchased, without any changes in the specifications, quantity, or supplier. This situation often occurs when a company needs to replenish stock of routine items that are used in their operations, making the process straightforward and efficient.

In contrast, modified rebuy involves some changes in the order, such as adjusting the quantity or quality of the product, or switching suppliers. The new task situation refers to a buying decision made when a company is purchasing a product for the first time, which usually entails a thorough evaluation and decision-making process. Thus, these other situations do not fit the description of a scenario with no modifications.