| 1 | (A) | 2 | (B) | 3 | (B) | 4 | (C) | 5 | (C) |
| 6 | (B) | 7 | (A) | 8 | (A) | 9 | (C) | 10 | (D) |
| 11 | (A) | 12 | (D) | 13 | (B) | 14 | (D) | 15 | (C) |
| 16 | (D) | 17 | (A) | 18 | (A) | 19 | (B) | 20 | (A) |
| 21 | (A) | 22 | (A) | 23 | (B) | 24 | (C) | 25 | (A) |
| 26 | (B) | 27 | (B) | 28 | (C) | 29 | (A) | 30 | (A) |
| 31 | (C) | 32 | (C) | 33 | (C) | 34 | (D) | 35 | (C) |
| 1 | A | 2 | C | 3 | D | 4 | D | 5 | A |
| 6 | C | 7 | C | 8 | B | 9 | C | 10 | D |
| 11 | D | 12 | A | 13 | C | 14 | C | 15 | C |
| 16 | B | 17 | A | 18 | C | 19 | B | 20 | B |
| 21 | A | 22 | C | 23 | C | 24 | B | 25 | C |
| 26 | A | 27 | C | 28 | C | 29 | D | 30 | D |
| 31 | C | 32 | C | 33 | C | 34 | A | 35 | C |
| 1 | D | 2 | B | 3 | B | 4 | C | 5 | B |
| 6 | C | 7 | D | 8 | D | 9 | B | 10 | C |
| 11 | A | 12 | A | 13 | D | 14 | D | 15 | A |
| 16 | A | 17 | B | 18 | A | 19 | C | 20 | B |
| 21 | B | 22 | A | 23 | C | 24 | D | 25 | A |
| 26 | D | 27 | D | 28 | C | 29 | A | 30 | C |
| 31 | C | 32 | C | 33 | B | 34 | B | 35 | A |
CREST Science Olympiad (CSO) Answer Keys for the Academic Year 2023-24.