Concept:
Ranging is the process of locating intermediate points on a straight survey line.
The standard methods of ranging in chain surveying are:
• Direct ranging
• Indirect ranging
• Reciprocal ranging
Step 1: Identify the recognized methods.
Direct and reciprocal ranging are commonly used depending on the visibility between end stations.
Indirect ranging is also recognized when direct ranging is not feasible.
Step 2: Identify the incorrect option.
"Optical ranging" is not a standard method of ranging in chain surveying.
Hence,
\[
\boxed{\text{Optical ranging is NOT a method of ranging}.}
\]
Therefore, the correct option is
\[
\boxed{(A)\;\text{Optical ranging}.}
\]