Step 1: Plan.
We test each statement against dates and places we know, then see which option has exactly the true ones.
Step 2: Statements about places and years.
Al Jazeera is a Qatari network, so its base is Doha. That removes B at once, and with it options 2 and 3.
Step 3: Decide between options 1 and 4.
Both contain D. They differ on whether A or C is the true one. So we only need to test A and C.
Step 4: Test C.
Doordarshan's colour broadcasts began in 1982 with the Asian Games in New Delhi. The year 1983 is wrong, so C is false and option 4 goes.
Step 5: Test A.
Voice of America started in 1942 as a wartime radio service. So A is true. Option 1 is left.
Step 6: Cross check D.
The BBC's television service opened in 1936 from Alexandra Palace in London, so D is true as option 1 requires.
Final Answer:
Only A and D hold, so the key is option 1.
\[ \boxed{1} \]