Answer:
Tuned means:
Step-by-step explanation:
1. Adjust a musical instrument to the correct or uniform pitch
2. Adjust something such as a radio or television to the right signal
3. Adjust an engine or balance mechanical part on a vehicle so it runs smoothly.
4. Adjust or adapt something to a particular situation.
I think in this text it's definition 4, but that's just me.
Sorry I could only answer half of your question.