Significant figure and uncertainty

0.0350

How many significant figures are there? Answer with number only.

• 6.946

• 6.95

• 6.9

• 7.0

• 2.3917

• 2.392

• 2.39

• 2.4

• 1.0%

• 2.0%

• 4.0%

• 5.0%

Which of the following measurement with uncertainty is written correctly?