a. five attacks. 4 attacks and one flurry attack at the highest base attack bonus. It says monks don't have an "off hand" with unarmed strike, so two weapon fighting cannot be used.
b. eight attacks. The flurry doesn't count and you get 4 with each hand
c. Nine attacks. 4 attacks with primary hand, 4 with secondary hand, 1 flurry at the highest base attack bonus
d. two attacks. one attack, and one flurry
Flurry of Blows (Ex)
When unarmored, a monk may strike with a flurry of blows at the expense of accuracy. When doing so, she may make one extra attack in a round at her highest base attack bonus, but this attack takes a -2 penalty, as does each other attack made that round. The resulting modified base attack bonuses are shown in the Flurry of Blows Attack Bonus column on Table: The Monk. This penalty applies for 1 round, so it also affects attacks of opportunity the monk might make before her next action. When a monk reaches 5th level, the penalty lessens to -1, and at 9th level it disappears. A monk must use a full attack action to strike with a flurry of blows.
When using flurry of blows, a monk may attack only with unarmed strikes or with special monk weapons (kama, nunchaku, quarterstaff, sai, shuriken, and siangham). She may attack with unarmed strikes and special monk weapons interchangeably as desired. When using weapons as part of a flurry of blows, a monk applies her Strength bonus (not Str bonus × 1½ or ×½) to her damage rolls for all successful attacks, whether she wields a weapon in one or both hands. The monk can’t use any weapon other than a special monk weapon as part of a flurry of blows.
In the case of the quarterstaff, each end counts as a separate weapon for the purpose of using the flurry of blows ability. Even though the quarterstaff requires two hands to use, a monk may still intersperse unarmed strikes with quarterstaff strikes, assuming that she has enough attacks in her flurry of blows routine to do so."
At 1st level, a monk gains Improved Unarmed Strike as a bonus feat. A monk’s attacks may be with either fist interchangeably or even from elbows, knees, and feet. This means that a monk may even make unarmed strikes with her hands full. There is no such thing as an off-hand attack for a monk striking unarmed. A monk may thus apply her full Strength bonus on damage rolls for all her unarmed strikes."
If you get more than one attack per round because your base attack bonus is high enough, because you fight with two weapons or a double weapon or for some special reason you must use a full-round action to get your additional attacks. You do not need to specify the targets of your attacks ahead of time. You can see how the earlier attacks turn out before assigning the later ones."
If you wield a second weapon in your off hand, you can get one extra attack per round with that weapon. You suffer a -6 penalty with your regular attack or attacks with your primary hand and a -10 penalty to the attack with your off hand when you fight this way. You can reduce these penalties in two ways:"