Answer to Question 1
D
Explanation: A) Crepitus is not related to knock-knee.
B) Crepitus is not related to scoliosis.
C) Crepitus is not related to a bone tumor.
D) Correct In degenerative joint disease, cartilage is gone and the bone ends rub together with movement and produce crepitus.
Answer to Question 2
D
Explanation: A) The suffix -al does not mean this.
B) The suffix -al does not mean this.
C) The suffix -al does not mean this.
D) Correct