Final answer:
The volume of the marker is obtained by subtracting the initial water level in the graduated cylinder (20 mL) from the final water level after the marker is submerged (26 mL), which results in a volume of 6 mL. Therefore, the answer is A) 6 mL.
Step-by-step explanation:
If a marker was dropped into a graduated cylinder filled with 20 mL of water, and the water level rose to 26 mL, the volume of the marker can be determined using the displacement method. The water level before the marker was dropped was at 20 mL, and after the marker was submerged, the water level increased to 26 mL. The difference in water level indicates the volume displaced by the marker, which is equal to the volume of the marker.
To calculate the volume of the marker, you subtract the initial volume from the final volume. So, the volume of the marker would be:
Volume of marker = Final volume - Initial volume
Volume of marker = 26 mL - 20 mL
Volume of marker = 6 mL
Therefore, the volume of the marker is 6 mL, which means option A) 6 mL is correct.