The two sentences that use an adverbial clause are:
-
So that we would have enough left for tomorrow, we only used half of the vegetables in the salad. - The clause "So that we would have enough left for tomorrow" functions as an adverb, explaining the purpose of using half of the vegetables.
-
Olivier J. Wallach, who founded the college, has a building named after him there. - Actually, this sentence contains a relative clause, not an adverbial clause.
The other sentences do not contain adverbial clauses either.
Final Selection:
- So that we would have enough left for tomorrow, we only used half of the vegetables in the salad.
The second answer previously thought to have an adverbial clause does not fit. Hence, only one correct answer is present. Therefore, the initial claim of needing two correct answers is inaccurate based on the given sentence options.