Correct option is C
· Ionising radiation has enough energy to remove tightly bound electrons from atoms, creating ions. This process can damage the atoms in living cells and cause harm to their genetic material (DNA). Such damage can lead to mutations, cancer, or cell death.
· Chloroform and benzene vapors are toxic substances but do not directly affect DNA in the same way as ionizing radiation.
· Chlorinated water may have health effects due to long-term exposure but does not directly damage DNA like ionizing radiation.
