Debugger is a program that

Answer: allows to set breakpoints, execute a segment of program and display contents of register

Why this is correct:

• Set breakpoints: debuggers let you pause execution at specified points so you can inspect program state.

• Execute or step through code: you can run a segment, step into/over instructions or continue from a breakpoint to control execution flow.

• Inspect registers and memory: debuggers display (and often allow modification of) register and memory contents to help diagnose issues.

Why the other statements are not fully correct:

• Stating only that a debugger allows examining and modifying registers is true but incomplete; it omits breakpoint and execution control features.

• Claiming that a debugger does not allow execution of a segment of program is incorrect because controlling and executing segments is a core debugger capability.

• Therefore, selecting all statements as true is wrong because one statement is false.

Summary: A debugger is a tool that lets you control program execution (breakpoints and stepping) and inspect or modify the program state (registers, memory, variables), so the combined description above best matches the debugger's purpose.