Write the following statement as a conditional statement.
february has 29 days in a leap year.

if it is a leap year, then february has 29 days.
february has 29 days, if and only if, it is a leap year
if february has 29 days, then it is a leap year.
february has 29 days.

The answer is

If it is a leap year, then February has 29 days.

A conditional statement uses a pattern of ‘if’ followed by ‘then’. The obvious cause must be stated first followed by the outcome. ‘If and only if’ is an example of a biconditional statement. 

lunar landing mission. apollo 11 was the first manned mission to land on the moon. the first steps by humans on another planetary body were taken by neil armstrong and buzz aldrin on july 20, 1969. the astronauts also returned to earth the first samples from another planetary body.

explanation: