Answer:
C
Step-by-step explanation:
choose number which has low significant numbers
at first u got a long number right?
but then u need to round off to the lowest sig figs,, which is 2 sig figs
4.3 has 2 sig figs
22.1 has 3 sig figs
0.0021 has 2 sig figs
therefore u can see that the lowest sig figs is 2
