Determine the number of significant digits in the measurement.

60.00 g
a.
2
b.
4
c.
5
d.
1

Well, it depends on the precision you want. I mean, if you need to measure hundreths of grams, then the significant numbers on this figure would be four.

But without specifying anything else, the significant digits are as many as you need to properly describe the figure: two. So the answer is a.

If you make you answer for clear i can answer it : )