In which case is the change in entropy negative?

Which one of the following has $\Delta S^o$ greater than zero?

Considering entropy $(S)$ as a thermodynamic parameter,what are the necessary conditions for a process to be spontaneous?

The value of $\Delta S$ for freezing of $10 \ g$ of $H_2O_{(l)}$ (enthalpy of fusion is $80 \ cal/g$) at $0 \ ^\circ C$ and $1 \ atm$ pressure is.......$J/K$

Which of the following statements is incorrect?

$A$ heat engine is operating between $500 \ K$ and $400 \ K$. If the engine absorbs $100 \ J$ of heat,which of the following is an impossible amount of heat rejected by the engine (in $J$)?