Ayushi2399 arnkaprx I can give a shot at Q2
The overall passage says the social order that is introduced (Samurai at top and Peasants serving them etc..) does not sustain.
Q2 asks us 'Which of the following
would provide further support for the main reason cited for the decline of the Tokugawa period?'
- We see the decline due to the structure put in place and eventually the commercial class taking over which shifted balance of power in their favour.
Let's look at the options
(A) a samurai becomes a successful merchant --> Ok but does not tell provide further support in the decline.
(B) a successful artisan becomes a samurai --> again no support. It might just be good if people are prospering by getting into a better class maybe?
(C) a samurai must work as a bodyguard for an artisan --> Correct. This tells that the power of Samurai shifted wherein despite being at the top of food chain became a bodyguard to an artisan. Hence provides 'further support'
(D) a peasant revolt against the samurai --> ok but this supports the hierarchy and does not give a reason for decline
(E) a military invasion by American marines --> one invasion cannot be a reason for decline of Tokugawa 'period'