the size of the sample space is . The probability that the first three letters of the four-letter code are vowels is

a. possible errors

d. new questions

explanation:

predictions and planning happen before. a summery comes after. errors you get after investigation and new questions propose what you can look for in the future.

b

is correct hope this   also i learnd this in middle school

the electromagnetic energy from the sun arrives in the form of visible and invisible light.

its temperature is increasing. this causes molecular vibrations to increase.