Answer: slow, keyboard (i don't know about the song)
└(^o^)┘
Explanation: I just know most sad songs are slow and are on the keyboard but you can still do the guitar if you like. :D also it's your choice maybe you should sit down and think about it more this is my advice
"A local school wellness policy is a written document of official policies that guide a local educational agency (LEA) or school district's efforts to establish a school environment that promotes students' health, well-being, and ability to learn by supporting healthy eating and physical activity."