Explanation:

Let's match the mountain peaks with their respective locations/countries:

- Elbrus is located in Russia.

- Kilimanjaro is located in Tanzania.

- Mt. Cook is located in New Zealand.

- McKinley (also known as Denali) is located in the U.S.A..

Now, let's analyze the options:

- Option 1: A iii, B iv, C ii, D i

- Option 2: A iv, B ii, C iii, D i

- Option 3: A iv, B iii, C i, D ii

- Option 4: A iii, B i, C iv, D ii

Based on the matches:

- A iv: Elbrus - Russia

- B iii: Kilimanjaro - Tanzania

- C i: Mt. Cook - New Zealand

- D ii: McKinley - U.S.A.

Therefore, Option 3 is correct.