In Triple Jump, white flag indicates:

trail is valid

The correct answer is Option (1) - trail is valid

Triple jump:

• Landing Area: 9 meters in length and 2.75 meters in width.
• Take-off Board: 13 meters behind the pit (Men) and 11 Meters behind for (Women) and is white in color, 1.22 Meter length, and 20 cm in width.
• Plasticine Indicator Board: Indicate foul in the long jump. The length is 1.22 Meters and the Width is 10 cm
• Runway of Triple Jump: 40-45 meter
• Triple jump Phases are Approach run, Take off, Hop, Step, Jump, and Landing.
• In Triple Jump, white flag indicates: trail is valid.