On April 26, 1939, Great Britain did this in response to Hitler's aggressive moves?

a. Removed its army from India

c. Removed its navy from the Black Sea

b. Re-introduced conscription

d. Instituted an embargo of German exports

On April 26, 1939, Great Britain re-introduced conscription to Hitler's aggressive moves. So for the given question the correct option is option "b". Conscription actually means the compulsory drafting or enlistment of people in the government service. IN case of Great Britain in the year 1939 the compulsory drafting was made in the military to increase the number of soldiers. This was done to fight with Hitler and stop him from conquering great Britain. In some countries conscription is still present, but it dates back to a long time. China is a country that has conscription.