The main argument states that economic development is undertaken with the aim of improving the standard of living, and that this goal is rooted in social justice.
This implies two things: (i) development can be planned and implemented, and (ii) economic development is a valid tool to achieve social justice.
Let us now analyze each option:
Option 1: This supports the argument by reinforcing the idea that economic development is essential to raise living standards. Therefore, it strengthens the argument and cannot weaken it.
Option 2: This also supports the argument. If social justice implies economic prosperity, then using economic development as a means to achieve social justice is justified. Hence, it does not weaken but reinforces the argument.
Option 3: This weakens the argument directly. If development cannot be planned, the entire premise of “planned development” to raise living standards collapses. It undermines the feasibility of using economic development as a deliberate tool for achieving social justice. Thus, this is the correct answer.
Option 4: Incorrect, because Option 3 does indeed weaken the argument.