I put answer as B for question 7
As if income tax rates increase, then consumer spending on imports reduces as consumers have less money to spend, this will cause export prices to increase over import prices(less import spending), thus stimulating the terms of trade and reversing the trend
A and D are not right, the fist hint is that they are too similar as they have the same affect - appreciation, And an appreciation will worsen the the terms of trade as international competitiveness declines, So an appreciation will make Exports less attractive, more expensive reducing demand, and making imports cheaper, so more money will be spent on imports. both ways this worsens the tots. A and D are completely wrong. period
And the Tot has everything to do with international competetiveness