I have 5 math question

1: A zoo measured the height, in feet, of 9 giraffes?
18, 16, 22, 14, 17, 19, 15, 19, 22
A.16ft
B.17ft
C.18ft
D.19ft
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2: This table shows the size, in acres, of four large water parks. What is the median of the sizes of the four water parks?
A.60 acres
B.63 acres
C.64 acres
D. 65 acres
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3: What is the median of the ages in this stem-and-leaf plot?
A.43
B.45
C.46
D.47
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4: What is the median of this data in this stem-and-leaf plot?
A.21
B.22
C.23
D.24
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5: What is the median of the data set represented by the dot plot?
( )