Final answer:
Research has shown that learning in a first language (L1) facilitates the acquisition of a second language (L2) and vice versa, highlighting the interconnection between learning languages and overall language development.
Step-by-step explanation:
The question at hand relates to the acquisition of a first language (L1) and a second language (L2). Research by Johns Hopkins University found that students taught in both their native tongue and English progressed better than those taught only in English. This suggests that learning in L1 facilitates acquisition of L2, and learning in either language facilitates acquisition of the other.
Given that language acquisition occurs naturally at a young age, and considering the biological predispositions for language learning as well as the influence of societal and cultural factors, it is reasonable to assume that cross-linguistic interconnections promote overall language development. Moreover, Chomsky's concept of an innate language acquisition device (LAD) supports the notion that we are biologically equipped to learn language effortlessly. Therefore, of the options provided, statements 1 and 2 are true.