How many great lakes form the Great Lakes Basin?
5
3
3
3
3
5
4
3
5
4
3
5
4
3
5
4
3
5
2
4
3
5
2
4
3
5
2
4
3
5
2
4
6
3
5
2
1
4
6
3
5
2
7
1
4
6
3
5
2
7
1
4
6
3
5
2
7
1
4
6
3
5
2
7
1
4
6
3
5
2
7
1
4
6
3
8
5
2
7
1
4
9
6
3
8
5
2
7
1
4
9
6
3
8
5
2
7
1
4
9
6
8
5
2
10
7
1
4
9
6
8
5
2
10
7
11
1
4
9
6
8
5
2
12
10
7
11
1
4
9
6
8
2
12
10
7
11
1
9
6
8
2
12
10
7
11
1
9
6
8
2
12
10
7
11
1
9
6
8
2
12
10
7
13
11
1
9
6
8
12
10
7
13
11
1
14
9
6
8
12
10
7
13
11
1
14
9
6
8
12
10
7
13
4 lakes
7 lakes
3 lakes
5 lakes
8 lakes
4 lakes
6 lakes
9 lakes