The term "telepathy" applies to the ability to know what is in someone else's mind or to communicate with someone mentally, without using words or other physical signals, that is the power of reading others' thoughts. Hence, Option D is correct. Among the rest of the options, psychopathy means mental illness or disorder, telecommunication means communication over a distance by cable, telegraph, telephone, or broadcasting, psychology means the scientific study of the human mind and its functions, especially those affecting behaviour in a given context. These options do not express the intended meaning, hence incorrect.