The diagram below shows a set of budget lines facing a household. 
FIGURE 6-8
-Refer to Figure 6-8.The movement of the budget line from ab to ef could be caused by
Definitions:
Right Lymphatic Duct
A lymphatic vessel in the body that drains lymph from the right upper limb, right side of the thorax, and the right halves of the head and neck.
Edema
Swelling caused by excess fluid trapped in the body's tissues, often resulting from inflammation, injury, or medical conditions.
Thoracic Duct
The largest lymphatic vessel in the body, it transports lymph and chyle from the lymphatic system into the circulatory system.
Subclavian Vein
A major vein located under the collarbone that receives blood from the arm and parts of the neck and chest.
Q44: The "economic incidence" of an excise tax
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