He did not hesitate to pester the sleeping mother when he wanted money.

Answer: Option C

Shake : (of a structure or area of land) tremble or vibrate.
Wake : emerge or cause to emerge from sleep; stop sleeping.
Trouble : difficulty or problems.
Disturb : interfere with the normal arrangement or functioning of.
Pester : trouble or annoy (someone) with frequent or persistent requests or interruptions.

Synonym of Pester is Trouble