Place these forms in the order in which they usually occur in a classical symphony.

theme and variations
minuet and trio
sonata-allegro
rondo

Typically a classical symphony especially in the 18th century followed a distinct order of sonata-allegro for an opening or as an introductory. Then the theme and variations which would give way to the minuet and trio. Lastly you can use the rondo and also a sonata I believe. That's just from my experiences from listening to multiple sources of compositions.

Ireally don't know the answer