An example of an intermediate good will be:
a. wages paid to an employee.
b. steel purchased by the aircraft manufacturers.
c. vegetables purchased for your dinner.
d. electric bills for the office.
e. trucks purchased by the postal service.

b. steel purchased by the aircraft manufacturers.

Explanation:

An intermediate good is a producer good or semi-finished  good that is used as an input in the production process in the manufacturing of other goods such as finished goods. An example of an intermediate good in the options given above will be steel that is purchased by the aircraft manufacturers. Steel is a partly finished good used in producing aircraft, as a final or finished good.

yes, there will be a $2 increase in net income for every new container sold.

Explanation:

Since the cold company has a variable cost of $10, so at this price the company is covering it's variable costs. Any amount over and above this price charged would be surplus and profit for the company. If the company accepts the special order it would make a profit of $2 for every new container sold.  The company was previously selling the container for $15 but they were selling limited number of containers. Therefore by accepting this special order they would probably generate more net income with a $2 profit (many containers) than with a $5 profit (limited containers).