The correct answer is B. ESCAPE instruction.
The 8086 passes control to the 8087 by executing the ESCAPE instruction. The ESCAPE instruction is a special instruction that tells the 8086 to relinquish control to the 8087. The 8087 then executes the instructions that are stored in its memory. When the 8087 is finished executing its instructions, it sends a signal to the 8086, which then resumes execution.
The other options are incorrect. The BUSY instruction is used to test whether the 8087 is busy. The CONTROL instruction is used to control the 8087's operation. Fetch 8087 is not a valid instruction.
