Respuesta :
C contains the misplaced modifier, since the placement makes it sound as though dinosaur fossils are riding his bike.
Answer: C. Ryan thought of the dinosaur fossils riding his bike.
Explanation: a misplaced modifier is a phrase or clause placed incorrectly in a sentence so that it appears to modify an incorrect word, making the sentence confusing and leading to misunderstanding. From the given sentences, the one that contains a misplaced modifier is "Ryan thought of the dinosaur fossils riding his bike" the position of the phrase "riding his bike" makes unclear if it is Ryan or the dinosaur fossils who are riding the bike.