In a certain code language: (A) "pit dar na" means "you are good"; (B) "dar tok pa" means "good and bad"; (C) "tim na tok" means "they are bad". In that language, which code word stands for "they"?

Introduction / Context:
This is a word code mapping question where short code words represent English words. You must use overlapping information from different coded sentences to determine which specific code stands for the word "they".

Given Data / Assumptions:
(A) "pit dar na" → "you are good".
(B) "dar tok pa" → "good and bad".
(C) "tim na tok" → "they are bad".
We assume that each code token corresponds to exactly one English word and vice versa within this small set.

Concept / Approach:
Words that repeat across sentences allow us to find their shared codes using intersections. Once some mappings are fixed, we can identify the remaining word in a sentence by elimination. Our target is "they", which appears only in the third sentence, so we must decode the other words in that sentence first.

Step-by-Step Solution:
From (A), the words "you are good" correspond to codes "pit dar na". From (B), the words "good and bad" correspond to "dar tok pa". The common word with (A) is "good", and the common code is "dar". Thus dar → good. From (C), the words "they are bad" correspond to "tim na tok". The word "bad" is common with (B), and the common code between "dar tok pa" and "tim na tok" is "tok". So tok → bad. Now, the word "are" is common between (A) and (C). The common code between "pit dar na" and "tim na tok" is "na". Hence na → are. In (A), we already have dar → good and na → are, so the remaining code "pit" must stand for "you". In (C), "they are bad" = "tim na tok". We already know na → are and tok → bad. Thus the remaining code "tim" must correspond to "they".

Verification / Alternative check:
We can list all mappings: pit → you, dar → good, na → are, tok → bad, pa → and, tim → they. Each sentence now translates consistently without contradiction, confirming the mapping for "they".

Why Other Options Are Wrong:
"na" stands for "are", not "they". "tok" stands for "bad". "pit" stands for "you". None of these match the meaning of "they" once the intersecting information is correctly processed. Only "tim" remains as the correct code for "they".

Common Pitfalls:
A typical mistake is to treat any code that appears only once (like tim) as random or to guess it without fully decoding the others. Carefully using intersections between sentences removes ambiguity and ensures that every mapping is grounded in the data.

Final Answer:
The code word that stands for "they" is tim.