If salivary amylase is lacking in the saliva, which of the following events in the mouth cavity will be affected?

Question

$\begin{array}{1 1} (a)\; \text{Protein digestion} \\ (b)\; \text{Starch digestion} \\ (c)\; \text{Fat digestion } \\ (d)\; \text{Vitamin absorption } \end{array}$