Question: Ososayensi basebenzisa igama elithi "light year" ukuchaza
Options:
ukuthi ukukhanya kuhamba ngokushesha kangakanani emkhathini.
ibanga elihanjwa wukukhanya ngonyaka owodwa.
ukuthi makhulu kangakanani amadayamitha ezinkanyezi ezihlukene.
isikhathi esithathwa yiLanga ukuhamba emthaleni.
Answer: B