Answer :
Final answer:
A runway threshold marks the beginning of a runway and is typically identified by a series of white bars and a white threshold line.
Explanation:
A runway threshold is the line that marks the beginning of a runway. Its main purpose is to provide a visual reference for approaching aircraft, indicating where the usable runway surface starts. It is typically identified by a series of white bars and a white threshold line drawn perpendicular to the runway centerline.
So, the correct answer to your question would be option c: It marks the runway's beginning and is typically identified by a series of white bars and a white threshold line.
A runway threshold marks the beginning of a runway and is typically identified by a series of white bars and a white threshold line. Its purpose is to indicate the start of the available runway for taking off or landing aircraft. Runway thresholds also often have white arrows pointing towards the runway centerline to guide pilots.
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