Answer:
a. had a large number of sophisticated language systems
Step-by-step explanation:
- The indigenous tribes of the New guinea are Melanesian and Austronesian people and speak Papuans and they are the rarest of the newly evolves tribal population.
- As they have migrated and have a larger sense of the linguistics diversity as the lands were separated from other landmasses till date there are more than 312 tribes on the western side of the inland.