Passengers traveling by air from tokyo to san francisco hear the pilot announce that the plane is about to cross the international date line. their watches at that moment indicate that the correct local time is 2: 00 p. m. on monday. upon crossing the date line they should ) change their watches to 3: 00 p. m. on mondayb) change their watches to 1: 00 p. m. on mondayc) change their watches to 2: 00 p. m. on tuesdayd) change their watches to 2: 00 p. m. on sundaye) change their watches to 3.00 p. m. on tuesday

D) change their watches to 2:00 p.m. on Sunday.

Explanation:

The International Date Line, identified in 1884, crosses the middle of the Pacific Ocean and respects a 180° longitudinal (approximately) line that goes from north to south. It is set in the middle of the planet earth concerning the Greenwich Meridian. This line demarcates the two different dates found on each side of the planet. So yes, when you cross this line, you are traveling in time.

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explanation:

81 is a composite number.