Answer:
C
Step-by-step explanation:
When writing scientific names using binomial nomenclature, we always only look at the genus and the species. In this case, the genus is panthera and the species is leo.
One of the requirements of writing scientific names is that the genus comes before the species and only the genus and capitalized; everything else is lower case. Also, everything is italicized. So the answer is Panthera leo.
Hope this helps!