The bond dissociation energy of B$—$F bond in BF₃ is 646 kJ mol^–1 whereas that of C$—$F in CF₄ is 315 kJ mol^–1. The correct reason for higher B$-$F bond dissociation energy as compared to that of C$-$F bond is :

stronger $\mathrm{\sigma }$ bond between B and F in BF₃ as compared to that between C and F in CF₄

lower degree of $\mathrm{p\pi }‐\mathrm{p\pi }$ interaction between B and F in BF₃ than that between C and F in CF₄.

smaller size of B-atom as compared to that of C-atom

significant $\mathrm{p\pi }‐\mathrm{p\pi }$ interaction between B and F in BF3 whereas there is no probability of such interaction between C and F in CF₄