The correct answer is travel and trade between the two nations are severely restricted.
The statement that best describes the relationship between Cuba and the United States is “travel and trade between the two nations are severely restricted.”
Although the strict Communist regime that Fidel Castro imposed many years ago after the Cuban Revolution have changed and indeed there is a new President, Miguel Diaz-Canel, the travel and trade between the two nations is severely restricted. This has created poor living conditions on the island of Cuba and people still suffering from limitations in its economy.
The other options of the question should be a) the two nations enjoy strong economic and diplomatic ties, c) Cuba receives substantial economic support from the U.S., and d) Relations became much more friendly after the break up of the Soviet Union.