Chemical Bonding and Molecular Structure Part 1

(a)

C

sp3

H3−

O ||

C

sp2

−O−H
(b)

sp3

C

H3−

sp3

C

H2−OH
(c)

C

sp3

H3=

O ||

C

sp2

−

C

sp3

H3
(d)

sp3

C

H3=

sp2

C

−

sp3

C

H3
So, option (B) is correct
Note: If in carbon(C) all 4 bonds are sigma bond then it is sp3 hybridization and if there is 3 sigma bond then sp2 and if there is only 2 sigma bond there sp hybridization.