9. Which of the following terms is defined in the passage? (A) invention (line 7) (B) circumference (line 17) (C) manufacturing process (line 24) (D) bushing (line25)

12. Which of the following is mentioned in the passage about plovers? (A) Their eggs and chicks are difficult to find. (B) They are generally defenseless when away From their nests. (C) They are slow to react in dangerous situations. (D) Their nests are on the surface of the ground.