What are common solvents used in the manufacture of methamphetamine?

The correct response identifies brake cleaner, acetone, and camp fuel as common solvents used in the manufacture of methamphetamine. Each of these substances is known for its effectiveness as a solvent in various chemical processes, including illicit drug manufacturing.

Brake cleaner is often utilized due to its ability to dissolve oils and grease, making it a useful agent in the extraction processes involved in meth production. Acetone is a widely recognized solvent in both industrial and laboratory settings, and it is capable of dissolving a broad range of organic compounds, which is critical in the chemical reactions needed to synthesize methamphetamine. Camp fuel, or similar flammable solvents, can also serve as an effective extraction medium and as a heating source during the synthesis process.

The other options include solvents that are not typically associated with the manufacture of methamphetamine. For example, while benzene and thinners are solvents, they are less commonly used in this particular context compared to the solvents listed in the correct choice. Water and saline solution are not effective in this regard, as they do not facilitate the necessary chemical reactions for meth production.