Correct Answer: celebrate

Solution : The fourth option is the correct answer.

Lament means to express sorrow, grief, or regret, often in a vocal and demonstrative manner.

On the other hand, celebrating means observing an occasion or event with joy, festivity, and acknowledgement.

The meanings of the other options are as follows:

• Bemoan refers to expressing discontent or sorrow.
• An appeal refers to making a request or plea, often in a legal or formal context.
• Bleed refers to emitting blood.

Therefore, the correct answer is to celebrate.