My analysis of Option C.
invades the tree’sbark, forming cankers as it spreads AND lowers the pH of infected tissue to toxic levels,leading
The underlined portions present the result of the previous action . It is parallel now . Experts throw lightmikemcgarry GMATNinjaTwo
...
invades the tree’sbark, forming cankers as it spreads AND lowers the pH of infected tissue to toxic levels,leading
The underlined portions present the result of the previous action . It is parallel now . Experts throw lightmikemcgarry GMATNinjaTwo
...






