Question

In the following passage, some of the words have been left out. Read the passage carefully and select the correct answer for the given blank out of the four alternatives.
___________ it became difficult to empirically prove that children __________ better in private schools, the attack __________ a new weapon: per unit cost of learning outcomes. Most of the learning outcome researches almost _______________ fail to understand the entire ______________ of education in any depth and reduces it to learning of so­called 3Rs for economic purposes.
the attack __________ a new weapon
A) invents B) had invented C) is inventing D) invented

Answer 1

Answer:

Has invented

Option b

Hope u understand

Answer 2

Answer:

Had invented

Option B

Hope u understand