Ahypothesis and a theory are related because a) a theory is always used to develop a hypothesis b) they are both developed in the absence of observations c) the data collected when a hypothesis is tested can support a theory d) an experiment is done before the formation of both a hypothesis and a theory

The correct answer is C) The data collected when a hypothesis is tested can support a theory .

Explanation:

Hypothesis is just a guess or an explanation of any idea which lacks sufficient data to be proved. A theory is evolved from a hypothesis when sufficient data is available to prove that the hypothesis is correct.

This means if there is enough evidence in the form of experimental data to support a hypothesis then the hypothesis is accepted by the scientists and converts into a theory.

For example, if someone is doing research on a forest and he gives a hypothesis that an increase in the forest area results in increase in the number of species live in that forest. This hypothesis can be converted into a theory when evidence of an increased number of species will be found.

it would be c. xylem.