A compiler for a high level language that runs on one machine and produces…

Correct answer: Cross compiler

Explanation:

• A cross compiler runs on a host machine with one architecture and operating system but generates executable code for a different target machine or architecture. This is useful when the target environment cannot run a compiler (for example, compiling code for an embedded ARM device on a desktop x86 machine).

• Optimizing compiler: Applies transformations (such as loop unrolling, constant folding) to produce faster or smaller code for the same target; not specifically about compiling for a different machine.

• One-pass compiler: Processes the source code in a single pass (reads input once) to perform translation; this describes the compilation strategy, not whether the output targets a different machine.

• Multipass compiler: Performs multiple passes over the source or intermediate representations to handle complex analyses and optimizations; again, this concerns compilation stages rather than host/target differences.