"C. After 15 minutes" would be an appropriate time to suggest a client begin to monitor his or her pulse after beginning an exercise, since this gives enough time for the heart to become acclimated with the new pace.
Germany was unable to translate its earlier triumphs in 1939-1941 because they over reached. Early German victories saw Germany in control of most of Europe. Instead of consolidating the territories they conquered they made 2 very big strategic mistakes in 1941. The first and worst was on June 22, 1941 the Germans invaded the Soviet Union resulting in a two front war. The seciond mistake was on December 11, 1941 Germany declared war on the US.
It was a 13 day political and military standoff between the US and the Soviet Union over the installation of nuclear armed Soviet missiles in Cuba
