Which one of the following pairs has the same connection as in between GJ and QU?

Convert letters to their alphabet positions. In GJ, G is 7 and J is 10, so the first letter moves forward by 3. In QU, Q is 17 and U is 21, so the second letter moves forward by 4. The pattern is a forward shift of 3 for the first letter and 4 for the second, in that order.

Option C fits exactly. AD: A is 1 and D is 4, a shift of 3. SW: S is 19 and W is 23, a shift of 4. Same order, same gaps.

• A) BC shifts by 1 and WZ shifts by 3. The gaps are wrong.
• B) AB shifts by 1 and ST shifts by 1. Both gaps are 1, so the pattern breaks.
• D) DH shifts by 4 and VY shifts by 3. The gaps are right but reversed, so it is not the same connection.

The core concept is letter-position coding with a sequence of alphabetical shifts, which appears often in UPPSC reasoning sections and trains the habit of checking order as well as value.

Trap: aspirants see that DH and VY use the same two numbers (3 and 4) and pick D without checking the order of the gaps.