• Tandem Mass Spectrometry Terminology:
• In LC-MS/MS and GC-MS/MS using triple quadrupole ($QqQ$) mass spectrometers, MRM stands for Multiple Reaction Monitoring.
• In MRM, the first quadrupole ($Q_1$) selects a specific precursor ion, the collision cell ($q_2$) fragments it using collision-induced dissociation (CID), and the third quadrupole ($Q_3$) monitors specific characteristic product ions, providing extraordinary selectivity and sensitivity for trace residue quantitation.
• Conclusion: MRM stands for Multiple Reaction Monitoring (Option 2).

Correct option: (2) Multiple reaction monitoring

• Accelerated Solvent Extraction (ASE):
• According to the Clausius-Clapeyron relation, increasing hydrostatic pressure elevates the boiling point of liquids.
• Accelerated Solvent Extraction (ASE) (also known as Pressurized Liquid Extraction, PLE) utilizes high pressures ($10-20\text{ MPa}$ / $1500-3000\text{ psi}$) to maintain liquid extraction solvents at elevated temperatures ($100-200^\circ\text{C}$) well above their atmospheric boiling points, drastically accelerating extraction kinetics and solute desorption from solid matrices.
• Conclusion: The principle is utilized in Accelerated Solvent Extractor (Option 2).

Correct option: (2) Accelerated solvent extractor

• Biosynthesis of Azadiradione:
• Azadiradione is a degraded triterpenoid isolated from the neem tree (Azadirachta indica).
• In natural product chemistry, it is classified as a limonoid (specifically a meliacin-type tetranortriterpenoid possessing a characteristic 4,4,8-trimethyl-17-furanyl steroid-like skeleton with four terminal carbons excised from the side chain).
• Conclusion: Azadiradione is a Limonoid (Option 2).

Correct option: (2) Limonoid