Answer: c. Wikang Opisyal
Explanation:
The Official language of a country is the one that is used by the Government of the country. Sometimes a country might have more than one official language as is the case in the Philippians where both English and Filipino are the official languages.
In schools, the official language is the language of official learning to encourage citizens to be conversant in the language especially in countries where multiple languages are spoken as it will act as a unifying factor for the various people.
