What is your answer?

    No court that suppresses evidence is impartial.
    Some courts subject to political pressure suppress evidence.
    So ???
    { 1 } - Some courts subject to political pressure aren't impartial.
    { 2 } - No courts subject to political pressure are impartial.
    { 3 } - Some courts subject to political pressure are impartial.
    { 4 } - None of these validly follows.

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1 is correct!

    No court that suppresses evidence is impartial.
    Some courts subject to political pressure suppress evidence.
    So ???

By the second premise, there are courts subject to political pressure that suppress evidence. By the first premise, these courts aren't impartial. So some courts subject to political pressure aren't impartial.

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2 is wrong. Please try again.

    No court that suppresses evidence is impartial.
    Some courts subject to political pressure suppress evidence.
    So ???
    { 1 } - Some courts subject to political pressure aren't impartial.
    { 2 } - No courts subject to political pressure are impartial.
    { 3 } - Some courts subject to political pressure are impartial.
    { 4 } - None of these validly follows.

"No" in the conclusion is too strong. Maybe some courts subject to political pressure are honest and impartial -- and resist the political pressure.

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3 is wrong. Please try again.

    No court that suppresses evidence is impartial.
    Some courts subject to political pressure suppress evidence.
    So ???
    { 1 } - Some courts subject to political pressure aren't impartial.
    { 2 } - No courts subject to political pressure are impartial.
    { 3 } - Some courts subject to political pressure are impartial.
    { 4 } - None of these validly follows.

This conclusion might be true. But we can't prove it from our premises!

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4 is wrong. Please try again.

    No court that suppresses evidence is impartial.
    Some courts subject to political pressure suppress evidence.
    So ???
    { 1 } - Some courts subject to political pressure aren't impartial.
    { 2 } - No courts subject to political pressure are impartial.
    { 3 } - Some courts subject to political pressure are impartial.
    { 4 } - None of these validly follows.

No, we can draw one of the conclusions.

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