Final answer:
Sportive lemurs, which are part of the prosimians in the Order Primates, are generally nocturnal. They are active at night and rest during the day, making the statement 'sportive lemurs are diurnal' false.
Step-by-step explanation:
The question whether sportive lemurs are diurnal can be answered by understanding the behavior of lemurs and their classification. Lemurs belong to the Order Primates, which is divided into Strepsirrhini and Haplorhini. Sportive lemurs, being part of the prosimians under Strepsirrhini, are generally nocturnal. This means that they are active during the night and rest during the day, aligned with the behavior of many Strepsirrhine species which tend to have larger olfactory centers in the brain, and are smaller with smaller brains than anthropoids. Anthropoids, on the other hand, which include monkeys, apes, and humans, are usually diurnal. Therefore, the correct answer to the question is b) False, sportive lemurs are not diurnal; they are nocturnal.