Which of the statements are characteristics of a good hypothesis?

A good hypothesis needs to have clear concepts which must be testable by experimental or observational procedures

Explanation:

A scientific hypothesis is a possible explanation for a given phenomenon observed in the natural world. In the scientific method, a hypothesis is first raised, subsequently tested, and finally confirmed (or rejected) by empirical evidence. A scientific hypothesis needs to fulfill a series of characteristics: to be capable of being tested, to be understandable, to be precise, to be plausible, to define associations among experimental variables, etc.

explanation:

the fossil record extends back to a dog-like ancestor some 55 million years ago, which gave rise to the first horse-like species 55 to 42 million years ago in the genus eohippus.