STP: standard temperature and pressure implies:

Question $4$ options:

a$)$

$0$ degrees Celsius or $273$K and $1$ atm

b$)$

$32$ degrees Celsius or $273$K and $1$ atm

c$)$

$0$ degrees Celsius or $273$K and $760$ atm

d$)$

$25$ degrees Celsius or $298$K and $1$ atm