For the below question is the correct answer which uses the participle form instead of the past tense (which is parallel to the left). So anyone please explain the logic behind the using supplying instead of supplied ?
Question: During the 18th century roughly 0.5 billion grams of gold are estimated to have left Columbia, Peru, Ecuador, Panama and Haiti and supplied 80% of the world's total quantity of recovered gold.
[A] During the 18th century it is estimated that roughly 0.5 billion grams of gold left Columbia, Peru, Ecuador, Panama and Haiti and supplied
It is estimated that 18th century roughly 0.5 billion grams of gold left Columbia, Peru, Ecuador, Panama and Haiti, supplying
is the correct answer.
Question: During the 18th century roughly 0.5 billion grams of gold are estimated to have left Columbia, Peru, Ecuador, Panama and Haiti and supplied 80% of the world's total quantity of recovered gold.
[A] During the 18th century it is estimated that roughly 0.5 billion grams of gold left Columbia, Peru, Ecuador, Panama and Haiti and supplied
It is estimated that 18th century roughly 0.5 billion grams of gold left Columbia, Peru, Ecuador, Panama and Haiti, supplying
is the correct answer.
