In which sentence does the underlined adverb clause modify an adverb?

when the double eagle ii landed in paris, other balloonists who had planned to cross the atlantic cancelled their trip.

three men crossed the atlantic ocean in the double eagle ii in 1978.

some balloonists who had tried to cross the atlantic ocean disappeared before they were able to land.

the double eagle ii was a hot-air balloon that flew farther than other hot-air balloons.

In which sentence does the underlined adverb clause modify an adverb?

1. When the Double Eagle II landed in Paris, other balloonists who had planned to cross the Atlantic cancelled their trip.

2. Three men crossed the Atlantic Ocean in the Double Eagle II in 1978.

3. Some balloonists who had tried to cross the Atlantic Ocean disappeared before they were able to land.

4. The Double Eagle II was a hot-air balloon that flew farther than other hot-air balloons.

The adverb it modifies is "farther".  

All of the other sentences have clauses that modify verbs, not adverbs.

ccd puts the honeybee populations and crop health at risk.

the above detail from paragraph 2 supports the inference about honeybee.

delfino 2: diez in the desert analysis: the story, delfino 2: diez in the desert was really about not giving up! that is basically the theme of the story, and also being more prepared. the plot of the story was about diez, the main character, traveling through the harsh desert with other immigrants. also, that keeping the group alive and getting them to their final destination. the setting of the story took place in mexico in the harsh desert.