Answer Happy

Question 5 (1 point) Listen ▶ In the lab, we always focus with the 4X objective first (using coarse focus and, if useful, the fine focus). At the 10X objective, you may need to use the coarse focus again slightly, and then you can use the fine focus as well. At the 40X objective: A) You should not use the coarse focus at all; only use the fine focus. B) You may need to adjust the coarse focus slightly once again but then will mainly use the fine focus. OC) You should only use the coarse focus; do not use the fine focus. OD) You may need to adjust the coarse focus slightly once again but should never use the fine focus.