Which type of radiation exposure is least likely to cause cell damage?

Low doses of radiation exposure are least likely to cause cell damage due to the body's ability to repair itself from minor damages. Biological systems typically have mechanisms in place for DNA repair, and low-level radiation generally results in fewer ionizations and thus less cellular disruption compared to higher doses.

In the context of radiation effects, both acute and chronic exposures at higher levels can lead to significant damage, as they overwhelm these repair mechanisms. High doses can cause immediate and severe damage, which can lead to cell death or mutations. Chronic exposure provides a longer duration for potential damage, increasing the risk of cumulative effects over time. Therefore, low doses are associated with a significantly reduced risk of adverse biological effects compared to the other types of radiation exposure listed.