Kennedy claims in this excerpt is that basically nothing is impossible. The things that are considered extremely difficult to reach are possible if you are willing to do them. The capability or the limits of a person are only established by him or herself.
Probably small group judging by the other answers . Hope I can help.
The Popish Plot is an imaginary plot in which the death of Charles II were supposed to be planned by Roman Catholics and other government officers.
Answer: D
Explanation
The Popish Plot can be understood by marking the words from history - 'a unpleasant and hellish plot' (referred by the House of Commons) done by 'a shame to mankind' ( referred by Lord Justice Jeffreys to Titus Oates).
The imaginary plot had Charles II to be executed and to replace the former with his brother James.