Explanation:

All of the options below can be used to achieve coherence in a text:

A. Claim: A clear and precise claim helps convey the main idea of a paragraph or essay, making it easier for the audience to understand the writer's intentions.

B. Grammatical signal: Grammatical signals, such as parallelism or subject-verb agreement, ensure that the text is linguistically consistent and easy to follow.

C. Idea development: A coherent text progressively builds on ideas or arguments, in a logical and organized manner. This makes it easier for the reader to follow and understand the content.

D. Pattern of idea development: An organized pattern in the development of ideas helps guide the reader through the text. Different structures like chronological order or cause-and-effect relationships can be used to shape the text, creating a clear and coherent flow.