Correct Answer: Stabilise

Solution : The correct choice is the first option .

Falter means to hesitate or waver in action, speech, or purpose.

Stabilise means to make or become stable or firmer.

In the context of the given pair, falter and stabilise represent opposite actions, where falter suggests instability or hesitation, and stabilise implies making something steady or firm.

• Suspect: It denotes believing that something may happen or be true.
• Haunt: It is used as a ghost of a dead person appearing in a place regularly.
• Transfer: It denotes moving, or moving somebody or something.