Since the desert air was so dry, the bread quickly turned stale. in this sentence, which word serves as a clue that there is cause and effect?
a. since
b. stale
c. quickly
d. so
i'm stuck between a and d

Its A because the word "since' means that something happened and caused something else to happen

He said he had no intention to be involved with any other suspects and that the incident occurred at a news conference 9in in the parking area and was also expected for an hour later and a few days before his arrest and he had a 7child and the two had been killed and two were injured in a c car 33crash incident in a c square on the scene in which the driver of the car parked on a bus at a bus stop in a coma and was also a suspect on a car crash near san jose on the interstate north on a highway from san diego county in new orleans where a woman is being charged in connection with the murder in her home state in a coma