What is a key difference between SLA (Second Language Acquisition) and bilingualism?
a) Both SLA and bilingualism involve learning a second language.
b) SLA refers to the process of acquiring a second language, while bilingualism refers to the ability to speak two languages fluently.
c) SLA and bilingualism are terms used interchangeably to describe the same concept.
d) SLA focuses on the cognitive aspects of language learning, while bilingualism focuses on the cultural aspects.