Final answer:
The quantity of methamphetamine that constitutes a first-degree crime depends on the jurisdiction's specific laws, which often categorize drug offenses by the amount involved. For an accurate threshold, one must refer to local statutes or regulations.
Step-by-step explanation:
The specific quantity of methamphetamine that constitutes a first-degree crime can vary depending on the jurisdiction or country's law. Generally, laws classify crimes involving drugs into degrees based on the amount of the substance involved, with larger quantities typically leading to more severe charges, such as first-degree offenses. To determine the exact amount of methamphetamine that would result in a first-degree manufacturing charge, one would need to consult the specific statutes or laws of the jurisdiction in question. It's important to note that manufacturing illegal drugs like methamphetamine involves severe legal penalties, regardless of the amount.