Which of the following is a purpose of the first IF amplifier stage in a receiver?

The Intermediate Frequency (IF) stage is the core of a superheterodyne receiver's amplification and filtering system. By operating at a fixed frequency, the first IF amplifier can use highly optimized, fixed-tuned filters that significantly improve the receiver's selectivity (its ability to separate close signals). Additionally, the IF stage provides the bulk of the receiver's voltage gain. By amplifying the signal at this lower, intermediate frequency rather than at the original high RF frequency, the receiver achieves stable, high-level amplification without the risk of self-oscillation that plagues high-gain RF stages.