Correct Answer: address

Solution : The correct choice is the first option .

Address (verb) means a formal speech. It means to discuss and deal with a situation. It helps convey that the destination countries of immigration must accept and deal with the real risks that it raises.

The meanings of the other options are as follows:

• Speak means to express thoughts verbally, but it doesn't encompass the idea of actively managing or dealing with issues, as required in this sentence.
• Perform means to carry out an action, but it does not specifically convey the idea of dealing with a situation, like "address" does.
• Disregard means to ignore someone or something.

Therefore, the complete sentence is: "If broadly beneficial immigration is to be sustained, destination countries must acknowledge and address the real risks that it raises."