Answer:
The two marked in the image.
Explanation:
In scientific notation you will want only the most significant non-zero digit before the comma.
The first underlined number has two digits before it, the correct representation should be
The second underlined number has a 0 leading digit, while the most significant non-zero digit is a 4. The correct represantation should be
An extra case could be made for the second number of the list, since it has no decimal part, but the way I read it means "the instrument used to measure the data has 0 decimal places accuracy"