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YES

NO

YES

A day will be 24 hours, 39 minutes and 35.244 SI seconds long

A day will be 24h×60m×60s using a "mars second" equal to 1.0275 SI seconds.

Other

A day will be 24h×60m×60s where a "second" is a unit of angle rather than time, equal to 1/86400 of a revolution w.r.t the sun (i.e. the equivalent of Earth's UT1, this is called "Coordinated Mars Time")

A day will be 24h×60m×60s using SI seconds (and will drift with respect to mean solar time by ~40 minutes a day)

YES

YES

A composite number

Divisible by 2

A leap year

Divisible by 3

A prime number

NO

Yes

No, civil time based on atomic time (e.g. TAI) and fully decoupled from Earth rotation

No, replaced with leap minutes

No, civil time based on Earth rotation (e.g. UT1) and fully decoupled from atomic time

Something else

YES

It will be spoken in English

It will be spoken by an America

It will be spoken before 2030

YES