a) Brittle facture
b) Fracture due to fatigue
c) Failure by excessive deformation
d) Deformation and deflection adversely affecting appearance or effective use of structure

Answer: d
Explanation: Limit state of serviceability includes (i) deformation and deflection adversely affecting appearance or effective use of structure, (ii) vibrations in structure or any part of its compound limiting its functional effectiveness, (iii) repairable repair or crack due to fatigue, (iv) corrosion, (v) fire.