Plz with english which sentence is punctuated correctly? barbara bush focused much of her energy: on a cause near to her heart, literacy. barbara bush focused much of her energy on a cause: near to her heart literacy. barbara bush focused much of her energy on a cause near to her heart, literacy. barbara bush focused much of her energy on a cause near to her heart: literacy.

Barbara Bush focused much of her energy on a cause near to her heart: literacy.

Explanation: In the first two options, the colon is being misused because it is fragmenting essential elements of a same clause (direct object "much of her energy" from complement "on a cause..." / prepositional phrase "on a cause" from prepositional phrase "near to her heart" modifying it.) In the third option, the comma should not be used to introduce the one-item list "literacy."