Final answer:
Temporal resolution is the type of image resolution negatively affected by the use of multiple focal zones, as it slows down image acquisition causing delays in capturing moving structures.
Step-by-step explanation:
The type of image resolution that is negatively affected by the placement of multiple focal zones at the area of interest is Temporal resolution. When multiple focal zones are used, the ultrasound system must make several passes to acquire the necessary data, reducing frame rate and consequently affecting temporal resolution. Temporal resolution refers to how quickly imaging data can be acquired and is important for capturing moving structures within the body, such as a beating heart.