Final answer:
Combinations on or below a consumer's budget line are attainable, and those involving the entire consumption of one good and none of the other are also possible.
Step-by-step explanation:
The combinations of goods that are attainable given a consumer's budget constraint or budget line are those that can be found on the budget line or below it. Combinations on the left of the vertical dashed line and above the horizontal line, like choice P, involve less consumption on the horizontal axis and more on the vertical axis. Choices to the right of the vertical dashed line and above the horizontal line, such as choice N, have more consumption of both goods. Lastly, combinations like choice Q, which are to the right of the vertical dashed line and below the horizontal line, include less of the good on the vertical axis but more on the horizontal.
To summarize, combinations on the budget line or below are attainable. A combination involving the entire consumption of one good and none of the other is a point at either extremity of the budget line. Therefore, to fill in the blanks: Combinations on the 'inside' of the budget line, 'on' the budget line, 'fall' below the budget line, and a combination that involves the entire consumption of one good and 'no' consumption of the other goods are attainable within a given budget.