Which of the following if true would most weaken the argument of the passage above ........

Logial Reasoning (CLAT) Statement - Arguments

Instead of being concerned with what actually happens in practice … [economics] is increasingly) reoccupied with developing pseudo-mathematical formulas. These provide models of behavior which never quite fit what actually happens, in a way which resembles the physical sciences ;one wrong: instead of equations describing reality, economics produces equations describing deal conditions and theoretical clarity of a type which never occurs in practice’.

Which of the following, if true, would most weaken the argument of the passage above?

The physical sciences are themselves reducing their reliance on mathematical formulae.

The real world in fact closely approximates ideal theoretical conditions.

We do not at present have the mathematical expertise to model the full complexity of the world economy.

Academic economists need to be more sensitive to human nature.

Explanation:

"The real world in fact closely approximates ideal theoretical conditions" weakens as it means that mathematicalm equations are useful for economics as they are close to reality, but the argument says exactly the opposite.
Hence, option 2 is the correct answer.