Final answer:
The probability of choosing a consonant from the word EXTRATERRESTRIAL is 8/15.
Step-by-step explanation:
To find the probability of choosing a consonant from the word EXTRATERRESTRIAL, we first need to count the number of consonants in the word. There are 8 consonants in the word: X, T, R, T, R, S, T, and R.
Next, we divide the number of consonants by the total number of letters in the word. The word EXTRATERRESTRIAL has a total of 15 letters. So, the probability of choosing a consonant is 8/15.