hello please help me with all three of these questions! please help with all three! i will give good rating and review if all three are answered!

Question 25 What is the geometry for the central Carbon (C) atom in the following structure? I - 0 HC H, trigonal pyramidal square planar tetrahedral bent linear trigonal planar Question 27 What is the bond angle for the H-C-C bond (labeled with the letter a) in the following structure? H a H H -cm- 180 90 109 120 107.5 D Question 29 What is the hybridization of the central oxygen atom in the following structure. H H2C sp3d sp3 sp sp2