ANSWER
5 significant figures.
Step-by-step explanation
The number 0.025 has 2 significant figures.
The number 4.07 has three significant figures.
The product of 0.025 and 4.07 will have 2+3=5 significant figures.
You could also multiply the two numbers to get,
0.025×4.07=0.10175
We can see clearly that the product has five significant figures.