Leonid Brezhnev's main priority as leader of the USSR was to
o invade the United States.
O strengthen military and space programs.
O increase funding for cultural and religious programs.
O introduce capitalist reforms to the economy.

B.) Leonid Brezhnev's main priority as leader of the USSR was to strengthen military and space programs.

Explanation:

Leonid Brezhnev was the general secretary of the Central Committee of the Communist Party of the Soviet Union, presiding over the country from 1964 until his death in 1982. His eighteen-year term as general secretary was one of the longest, only surpassed by that of Joseph Stalin.

As a leader, Brezhnev worked as a team and sought to consult his colleagues before acting, but his attempt to govern without significant economic reforms led to a national decline in the mid-1970s, a period known as the era of stagnation. The significant increase in military expenditures that, at the time of his death, were, according to the capitalist bloc, at approximately 15% of the country's GDP and an increasingly elderly and ineffective leadership were the basis for a decreasing GDP compared to Western nations. At the head of the USSR, Brezhnev promoted detente between the countries of the East and the West. His last major decision in power was to send the Soviet Army to Afghanistan in an attempt to save the fragile government that was fighting the mujahideen.

the correct answer would in fact be b. (: