1
$\left\{ x\left| x\in \mathbb{R},x\gt -۱ \right| \right\}$
✓
✗
2
$\left\{ x\left| x\in \mathbb{R},-۱\lt x\lt ۱ \right| \right\}$
✓
✗
3
$\left\{ x\left| x\in \mathbb{R},x\ge -۱ \right| \right\}$
✓
✗
4
$\left\{ x\left| x\in \mathbb{R},-۱\le x\lt ۱ \right| \right\}$
✓
✗