In a certain code language,
(A) 'pod na joc' means 'very bright boy';
(B) 'tam nu pod' means 'the boy comes';
(C) 'nu per ton' means 'keep the doll';
(D) 'joc ton su' means 'very good doll'. Which of the following means 'bright' in the language ? 

Answer: D. na

In statements (A) and (B), the common code word is 'pod' and the common word is 'boy'.
So, 'pod' stands for 'boy'.
In statements (A) and (D), the common code word is 'joc' and the common word is 'very'.
So, 'joc' stands for 'very'.
So, in (A) 'na' stands for 'bright'.