Respuesta :
D - provided that all parties agree to the price.
An adverb clause is used to change or qualify the meaning of a clause - so in this example the adverb clause qualifies WHEN the house will be sold.
D - provided that all parties agree to the price.
An adverb clause is used to change or qualify the meaning of a clause - so in this example the adverb clause qualifies WHEN the house will be sold.