Why is corporate governance important to investors? Explain how each of the following is related to corporate

Question:

Why is corporate governance important to investors? Explain how each of the following is related to corporate governance;
(a) Management entrenchment,
(b) Hostile takeovers,
(c) Incentive compensation plans,
(d) Greenmail,
(e) Poison pills,
(f) Strong boards of director,
(g) Vesting periods for options, and
(h) ESOPs.