(c) That's wrong. This question involves the statutory guarantees that are provided by the Australian Consumer Law. These guarantees include a guarantee that goods purchased by a consumer are of acceptable quality; and a guarantee that goods sold to a consumer are suitable for a consumer's purpose.

The initial question is whether Astrid qualifies as a consumer under the provisions of the Australian Consumer law. If she does, then the requirements of the sections that provide these particular guarantees can be considered.

The Australian Consumer Law takes three factors into account in deciding when goods are acquired by a consumer. Firstly, the price of goods must not exceed $40,000. In the present case, the price of the jam jars is only $10,000, so this requirement is satisfied.

But the price is not the only factor. A person does not acquire goods as a consumer if the goods are acquired for the purposes of re-supply (i.e. re-sale) or to use up in trade or commerce, or in production or manufacture, or to repair or treat other goods or fixtures on land. In the present case, Astrid clearly purchases the jars to use them up in the manufacture of her jam.

It follows that Astrid is not a consumer and the statutory guarantees do not apply to this case. The correct answer is therefore (b).