Explanation:

- E is the reference point.

- G is 10 km north of E.

- F is 2 km east of E.

- K is 4 km east of E.

- N is 5 km north of F.

- I is 12 km south of G.

- J is 10 km south of I.

- H is 7 km west of F.

- L is 2 km west of M and 12 km south of F.

To find the distance between G and J:

- G to I is 12 km (because I is directly south of G).

- I to J is another 10 km south.

- Total distance: 12 km + 10 km = 22 km.

So, the distance between G and J is 22 km.

- The correct answer is option:3 - 22 km.