A concrete statement can be considered as a 'solid' statement. This means that the sentence must contain hard facts to manifest the credibility of the statement. As much as possible, you give specific examples and provide evidence for this. From the choices, the answer would be D.
Their
The Horse Eats Ice Rarely
There
The Hedgehog Eats Raisins Everywhere
I hope this helps! I'm not sure if it will.
There is no passage and answer choices, so it is impossible to answer this question. I apologise.
