The answer to the question is option 2, Trypanosome. Sleeping sickness, also known as African trypanosomiasis, is caused by the protozoan parasite Trypanosoma. Trypanosoma is transmitted to humans through the bite of tsetse flies, which are found in sub-Saharan Africa.

Option 1, Grishmania, is incorrect. Grishmania is a misspelling of the parasite Leishmania, which causes leishmaniasis, not sleeping sickness.

Option 3, Ascaris, is also incorrect. Ascaris is a roundworm parasite that causes the disease ascariasis, but it does not cause sleeping sickness.

Option 4, lialirobar far, is not a known organism, so it is incorrect.

Therefore, the correct organism responsible for sleeping sickness is Trypanosome. It is important to note that the symptoms of sleeping sickness include fever, headaches, and fatigue, which can progress to more severe symptoms if left untreated.