Answer:
The correct answer would be D.Garden plants grow better in wet soil than in dry soil.
Scientific hypothesis refers to a proposed or tentative explanation for the occurrence of a particular phenomenon.
Testable hypothesis are those which can be approved or denied on the basis of results of any testing, experience, or data collection.
From the given choices, only fourth hypothesis can be scientifically or experimentally tested.
Same types of plants can be grow in dry and wet soils keeping all other variables constant (such as temperature, light, nutrients et cetera) in order to check the effects of the soil on the plant growth.
