Choose the correct option to fill in the blank in the given sentence:-

Men who are always _____ about their poverty, never achieve success forget happiness.

grumbling

The correct answer is Option (3) → grumbling

"Grumbling" means constantly complaining. The sentence conveys that those who keep complaining about their poverty neither achieve success nor happiness.

• rejoicing: Means feeling or showing great joy or delight. This is positive and doesn't fit the context of poverty preventing success.

• fighting: Means engaging in a violent struggle or argument. While one might fight against poverty, constantly fighting about it in a way that prevents success and happiness doesn't quite fit.

• ignoring: Means refusing to take notice of or acknowledge. Ignoring poverty would likely lead to worse outcomes, not necessarily directly hinder success and happiness in the way "grumbling" does by fostering a negative mindset.