All snakes are reptiles, is this a compound simple or complex sentence

Which type of context clue would define the word chary in the sentence below? matt excitedly jumped into his dad's new pickup truck, while his mother was chary about getting in. a. synonym b. antonym c. cause and effect d. explanation [ plz me im a retared ]

The invention of photography was initially important because

The scernio an example of which step in the five step model of communication jack: it was nice to meet you