HELP ME UNDERSTAND HOW TO DO THIS BCUZ ITS DUE TONIGHT AS IN NOOOW!!!

o(≧口≦)o

First picture: 6 strings. Second picture: 4 strings

Explanation:

first picture: the O at the top stands for open, so that means you still play.

Second picture: The X at the top means you don't play

first one : 6

second one : 4

       i hope this helps

b.) a 3-d model