Mr. Speaker, Robert Kennedy once said each time a person stands up for an ideal, strikes out against injustice, they send forth a tiny ripple of hope, and crossing each other from a million different centres of energy, those ripples build a current that can sweep down the mightiest walls of resistance.

Based on that paragraph can we conclude that this sentence is true?
Robert Kennedy enjoyed giving speeches.

Available choices:
(a). Yes.
(b). It's impossible to say.
(c). No.
(b).