Concept:
The correct word should complete the sentence meaningfully and grammatically.
Explanation:
The word \textit{enable} means “to make possible” or “to allow.”
A skywalk enables people to move safely between locations.
The other options do not fit grammatically or contextually.
Thus, the correct sentence is:
\textit{The 160-metre long skywalk will enable public to move safely between bus stand and railway station.}