2.2: 'The optimal Ate pairing is considered to be the most efficient to compute is the one that is most commonly used for practical implementation.' -> 'The optimal Ate pairing is considered to be the most efficient to compute and is the one that is most commonly used for practical implementation.'
2.2: Choose G_2 or G2 (probably G_2 is easier since there are many instances also of G_1 and G_T)
2.2: 'There also exists cyclic subgroup' -> 'There also exists a cyclic subgroup'
2.3: 'b is an element of multiplicative group of order p' -> 'b is a nonzero element of F_p' OR 'b is an element of a multiplicative group (F_p)^* of order p-1' OR 'b is an element of the multiplicative group of F_p'
Comments from Chloe (Expert Reviewer)