Final answer:
A typical laboratory centrifuge can spin at a rate that varies widely, often depending on its specific use. While a centrifuge used in DNA extraction can reach 7000 rpm, other standard laboratory centrifuges might operate at lower rpms such as 2000 or 4000 rpm, which correspond to options 1 and 2. The highest option provided, 8000 rpm, is also plausible for certain high-performance centrifuges.
Step-by-step explanation:
The revolution per minute (rpm) of a typical laboratory centrifuge can vary based on its design and functional use. However, according to the provided reference information, a centrifuge used in DNA extraction can spin at a rate of 7000 rpm. This suggests that option 3, 6000 rpm, is not a correct answer, and a typical centrifuge can achieve even higher rpms than the given options when necessary, such as an ultracentrifuge reaching up to 100,000 rpm in certain applications. Therefore, out of the options provided, 1) 2000 rpm, 2) 4000 rpm, 4) 8000 rpm; 4) 8000 rpm would be a plausible choice for a high-capacity centrifuge, but this question does not specify the exact type, so typically could imply a lower range like 1) 2000 rpm or 2) 4000 rpm for more standard laboratory centrifuges.