The U.S. Forest Service, then five years old, decided to put out every fire in its domain, and within three decades the agency formulated what it called the 10 A.M. policy, directing that fires be extinguished quicker than they had been in the past.
A. within three decades the agency
formulated what it called the 10 A.M. policy, directing that fires be extinguished
quicker than they had been in the past. Incorrect. "more quickly" is correct. It is parallel - Formulated Vs Decided.
B. within three decades the agency
has formulated what it called the 10 A.M. policy, directing that fires be extinguished
quicker than they had been in the past. Incorrect. "more quickly" is correct. It is not parallel - has Formulated Vs Decided.
C. within three decades the agency
had formulated what it called the 10 A.M. policy, directing that fires be extinguished
quicker than they had been in the past. Incorrect. "more quickly" is correct. It is not parallel - had Formulated Vs Decided.
D. within three decades the agency
formulated what it called the 10 A.M. policy, directing that fires be extinguished
more quickly than they had been in the past. Correct. "more quickly" is correct. It is parallel - Formulated Vs Decided. Past perfect tense has two actions - one implemented and formulated while "be extinguished....had been in the past"
E. within three decades the agency
has formulated what it called the 10 A.M. policy, directing that fires be extinguished more quickly than they had been in the past. Incorrect. "more quickly" is correct. It is not parallel - has Formulated Vs Decided.