Looking at the three coded sentences to find patterns:
Sentence 1: 'pit dae na' = 'you are good'
Sentence 2: 'dae took pit' = 'good and bad'
Sentence 3: 'tim na took' = 'they are bad'
Comparing sentences 2 and 3:
Common code word: 'took'
Common English word: 'bad'
Therefore: 'took' = 'bad'
Comparing sentences 1 and 3:
Common code word: 'na'
Common English word: 'are'
Therefore: 'na' = 'are'
From sentence 3: 'tim na took' = 'they are bad'
We know:
- 'na' = 'are'
- 'took' = 'bad'
Therefore: 'tim' = 'they'
The word that stands for 'they' is 'tim'.
The answer is Option 3.