Which among the following overlap will give strong bond?

Hybrid orbitals form strong bonds than the pure atomic orbitals.Therefore p-p overtapping gives least stable bond among the given options.In second, thrid and fourth options the bond is formed by overlapping of hybrid orbitals, hence it is stable.as the percentage of s-character increases ,size of orbital increases ,hence extent of overlapping increases.Where as in first option bond is formed by overlapping of pure atomic orbitals, hence it is unstable.