This task is about writing a correct answer for the reading comprehension task. Based on the information provided in a given passage, you should identify the shortest continuous text span from the passage that serves as an answer to the given question. Avoid answers that are incorrect or provides incomplete justification for the question.

[Q]: Passage: Flower ontogeny uses a combination of genes normally responsible for forming new shoots. The most primitive flowers probably had a variable number of flower parts, often separate from (but in contact with) each other. The flowers tended to grow in a spiral pattern, to be bisexual (in plants, this means both male and female parts on the same flower), and to be dominated by the ovary (female part). As flowers evolved, some variations developed parts fused together, with a much more specific number and design, and with either specific sexes per flower or plant or at least "ovary-inferior". Question: What did some plant parts do as they evolved?
[A]: fused together


[Q]: Passage: A elevator of this kind uses a vacuum on top of the cab and a valve on the top of the "shaft" to move the cab upwards and closes the valve in order to keep the cab at the same level. a diaphragm or a piston is used as a "brake" if there's a sudden increase in pressure avove the cab. however, to go down, it opens the valve so that the air can pressurize the top of the "shaft", allowing the cab to go down by its own weight. this also means that in case of a power failure, the cab will automatically go down. the "shaft" is made of acrilic, is always round, due to the shape of the vacuum pump turbine. in order to keep the air inside of the cab, rubber seals are used. due to technical limitations, these elevators have a low capacity. they usually allow 1-3 passengers and up to 525 lbs. Question: For sudden surges in pressure above the cab, what is used as a "brake"?
[A]: a diaphragm or a piston


[Q]: Passage: Instead, the monarch directly grants royal assent by Order in Council. Assent is granted or refused on the advice of the Lord Chancellor. A recent example when assent was refused (or, more correctly, when the Lord Chancellor declined to present the law for assent) was in 2007, concerning reforms to the constitution of the Chief Pleas of Sark. (A revised version of the proposed reforms was subsequently given assent.) In 2011, campaigners against a law that sought to reduce the number of senators in the states of Jersey petitioned the Privy Council to advise the Queen to refuse royal assent. An Order in Council of 13 July 2011 established new rules for the consideration of petitions against granting royal assent. Question: What was the subject of the bill that the Lord Chancellor refused to present for royal assent in 2007?
[A]:
reforms to the constitution of the Chief Pleas of Sark