Meaning of ‘extravagant’ – ‘spending too much money, or using too much of something’.
Meaning of other difficult words:
Profligate- spending money or using something in a way that wastes it and is not wise
Thrifty- using money and other resources carefully and not wastefully
Aloft- in the air or in a higher position
The meaning of ‘extravagant’ is similar to that of ‘profligate’.
Hence, option 4 is the correct answer.