From Beta radiation, people try to protect themselves from by wearing protective clothing that is made of aluminum.
Radiations is a type of rays, which are harmful for the human body and mainly generated by the nuclear reactions.
Penetrating power of beta radiations is more than alpha radiations but less than gamma or any photon radiation. It has the ability to enter in the skin of human but not that energy to pass through it. So, it can be shielded by the sheet of aluminum.
Hence, option (b) is correct i.e. beta radiations can be protected by aluminum.
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