The correct answer is (b).
Mesne profits are defined in Section 2(8) of the Code of Civil Procedure, 1908 as follows:
“Mesne profits” means the profits derivable from the use of immovable property, from the time of the accrual of the cause of action to the date of the decree or order.”
In other words, mesne profits are the profits that a person would have earned from using a piece of property if they had been in possession of it. They are usually awarded to the plaintiff in a case where the defendant has wrongfully deprived them of possession of the property.
The other options are incorrect because they do not define mesne profits.
(a) Section 2(4) defines “cause of action”.
(c) Section 2(12) defines “decree”.
(d) Section 2(14) defines “order”.