Given information:
- 'oka thi' means 'cold weather'
- 'doja tu' means 'hot climate'
- 'tu ni oka' means 'weather is hot'
The word 'oka' appears in:
- 'oka thi' = 'cold weather'
- 'tu ni oka' = 'weather is hot'
The common word in both English translations is 'weather'.
Therefore, oka = weather
The word 'tu' appears in:
- 'doja tu' = 'hot climate'
- 'tu ni oka' = 'weather is hot'
The common word in both English translations is 'hot'.
Therefore, tu = hot
From 'tu ni oka' = 'weather is hot':
tu=hot
oka=weather
ni=is
Therefore, the word 'ni' means 'is'.
The correct answer is Option 3: ni