Ralph Nader, who has been a critic of General Motors Corp. for many years, claims that when General Motors learned that Nader was about to publish a book entitled Unsafe at Any Speed, criticizing one of its automobiles, the company decided to conduct a campaign of intimidation against him. Specifically, Nader claims that GMC
(a) conducted a series of interviews with Nader's acquaintances, questioning them about his political, social, racial, and religious views;
(b) kept him under surveillance in public places for an unreasonable length of time including close observation of him in a bank;
(c) caused him to be accosted by women for the purpose of entrapping him into illicit relationships;
(d) made threatening, harassing, and obnoxious telephone calls to him;
(e) tapped his telephone and eavesdropped by means of mechanical and electronic equipment on his private conversations with others; and
(f) conducted a ‘‘continuing'' and harassing investigation of him. Nader brought suit against GMC for invasion of privacy.
Which, if any, of the alleged actions would constitute invasion of privacy?