Which statement correctly computes the average of four numerical values?

The following program is submitted:
proc contents data=_all_;
run;
Which statement best describes the output from the submitted program?

The Excel workbook REGIONS.XLS contains the following four worksheets:
EAST
WEST
NORTH
SOUTH
The following program is submitted:
libname MYXLS 'regions.xls';
Which PROC PRINT step correctly displays the NORTH worksheet?

Given the following raw data records:

The following output is desired:

Which SAS program correctly reads in the raw data?

The SAS data set PETS is sorted by the variables TYPE and BREED.
The following SAS program is submitted:
proc print data = pets;
var type breed;
sum number;
run;
What is the result?