which type of radiation is blocked by the skin but is the most dangerous once it is inside the body?\no beta…

which type of radiation is blocked by the skin but is the most dangerous once it is inside the body?\no beta particles\no radionuclides\no alpha particles\no gamma particles
Answer
Brief Explanations:
Alpha particles have low penetration power and can be blocked by the skin. But when ingested or inhaled, they can cause significant damage to internal tissues as they are highly ionizing.
Answer:
C. alpha particles