Concept:
The digestive system is responsible for the ingestion, digestion, absorption, and elimination of food. Food passes through a specific sequence of organs during digestion.
The normal pathway begins from the mouth and continues through the pharynx and esophagus before reaching organs involved in digestion and absorption.
Step 1: Recall the sequence of digestive organs.
The digestive pathway begins as:
\[
\text{Mouth} \rightarrow \text{Pharynx} \rightarrow \text{Esophagus}
\]
Step 2: Identify the organs involved in digestion.
The liver and gall bladder assist digestion by producing and storing bile, and the small intestine is the main site for digestion and absorption.
Thus, the correct sequence among the options is:
\[
\text{Mouth} \rightarrow \text{Pharynx} \rightarrow \text{Esophagus} \rightarrow \text{Liver and Gall bladder} \rightarrow \text{Small intestine}
\]
Hence, the correct answer is:
\[
\boxed{(A)}
\]