While most of the earliest known ball courts in Mesoamerica date to 900–400 b.c., waterlogged latex balls found at El Manati and representations of ballplayers painted on ceramics found at San Lorenzo attest to the fact that the Mesoamerican ballgame was well established by the mid-thirteenth century b.c.


(A) waterlogged latex balls found at El Manati and representations of ballplayers painted on ceramics found at San Lorenzo attest

(B) waterlogged latex balls found at El Manati and the painting of representations of ballplayers on ceramics found at San Lorenzo attests

(C) waterlogged latex balls found at El Manati and ceramics painted with representations of ballplayers found at San Lorenzo attests

(D) the finding of waterlogged latex balls at El Manati and the painting of representations of ballplayers on ceramics found at San Lorenzo attests

(E) the finding of waterlogged latex balls at El Manati and of representations of ballplayers painted on ceramics at San Lorenzo attest

Doubt- 

I was confused between Subject ( sing or plur) 

also happened to pick D :(




While most of the earliest known ball courts  (Plural subject) in Mesoamerica date (plural verb)  to 900–400 b.c., waterlogged latex balls (plural subject) found at El Manati and representations (plural subject ) of ballplayers painted on ceramics (x and y- plural) found at San Lorenzo attest (plural verb) to the fact that the Mesoamerican ballgame (singular subject) was (singular verb) well established by the mid-thirteenth century b.c.


All the subjects and their corresponding verbs are in agreement. 

In answer option D,

(D) the finding (sing subject) of waterlogged latex balls at El Manati and the painting (sing)  of representations of ballplayers on ceramics found at San Lorenzo attests (sing verb)

The two subjects are in gerund forms and are connected with the conjunction “and”. When two singular nouns are connected by the conjunction “and”, it becomes a plural subject (X AND Y) and takes a plural verb. "Attests" is singular and is hence incorrect.