3

Concise Inorganic Chemistry for JEE(Main and Advanced) by JD Lee(Third Edition) writes
If we compare the rate of hydrolysis for $\ce{SiX4}$(where X= F,Cl,Br,I), it is in the same order as that of their Lewis acid strength order,i.e.
$\ce{SiF4}$ > $\ce{SiCl4}$ > $\ce{SiBr4}$ > $\ce{SiI4}$
...