Leo save the audio file as MP3 and WMA
Step-by-step explanation:
MP3 is a type of music file. Since Leo is recording audio, it is equivalent to a music file only. So if he should record in mp3 format and in the destination or receivers side he/she must have mp3 player to play the audio file or use any online software to play.
WMA: It is once again a file extension which can record and play audio file. It is a competitor to MP3. It is designed for low-bandwidth voice playback application.
All the other formats like DocX is for document, GIF, BMP are for pictures.