Kesavananda's Masterstroke: Can Parliament's Power be Cut?

Main problem, my friend Rohan says the Parliament can abrogate fundamental rights using Article 368(1) after 24th Amendment. I think he's missing the point - Keshavananda Bharati (1973) said Parliament cannot destroy its foundation. Keshavananda is a landmark case, but Rohan says it can't override 24th Amendment. Our debate is stuck in limbo.

Section 2(d) of the 24th Amendment says Parliament can take away Fundamental Rights if 2/3rd majority votes for it. Article 368(1) says Parliament can amend the Constitution, even Fundamental Rights, through simple majority. But our revered Justice Mudholkar (Keshavananda) said Parliament can't destroy its own foundation - a.k.a Constitutional Structure.

So, here's the question for you guys:

1.