Final answer:
Collimation, decreased object-film distance, and faster films can help reduce the amount of radiation received by the patient when exposing radiographic film.
Step-by-step explanation:
When exposing radiographic film, the amount of radiation received by the patient is best reduced by collimation, which restricts the x-ray beam to only the area being imaged, minimizing radiation exposure to surrounding tissues. Decreasing the object-film distance can also help reduce radiation because the farther the object is from the film, the more the radiation spreads out and decreases in intensity. Additionally, using faster films that require less exposure time can lower the patient's radiation dose.