Long term health effects from radiation exposure are generally more concerning than acute effects because:

Long-term health effects from radiation exposure are particularly concerning because they can lead to serious conditions such as cancer and other severe health issues. Unlike acute effects, which often manifest immediately or shortly after exposure, the long-term effects may take years or even decades to develop. This delayed onset makes it challenging to establish a direct cause-and-effect relationship between the exposure and the resultant health issues.

Cancer, for example, is known to have a latency period, where the harmful effects of the radiation do not present symptoms until much later. Therefore, individuals exposed to radiation may not realize the impact on their health until it has progressed to a detectable stage, which complicates treatment and management strategies. Additionally, the risk of developing chronic diseases such as cardiovascular disorders or other systemic issues also increases with long-term exposure, creating a broader public health concern.

While other options mention aspects like timing, duration, and measurement, they do not encapsulate the critical aspect of the significant health consequences associated with prolonged exposure to radiation, which is the essence of why these long-term effects are more alarming.