Billy, let's recall what a linear pair of angles is:
• They are formed when two lines intersect.
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• Two angles are said to be linear if they are adjacent angles formed by two intersecting lines.
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• The measure of a straight angle is 180 degrees, so a linear pair of angles must add up to 180 degrees.
Upon saying that we have that:
• CAD and DAE are linear pairs
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• CAD and CAB are linear pairs
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• DAE and BAE are linear pairs
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• DAE and DAC are linear pairs
Now, you are ready to select all the options that actually apply.