1a. The police have taken him in for questioning in connection with the murder of a girl.
1b. The police have taken him in for questioning something that/which is in connection with the murder of a girl.
1c. The police have taken him in for questioning something in connection with the murder of a girl.
Question: Which is/are grammatically correct?
Do they all have the same meaning?
2. We can then differentiate the rightness itself as between moral rectitude, situational appropriateness, mutual consistency, and other conceptions. (original)
Question: I guess the original =
We can then,between moral rectitude, differentiate the rightness itself as situational appropriateness, mutual consistency, and other conceptions.
Is my guess correct , and grammatically correct?