It can be inferred from the passage that Harris and Gass have done which of the following ........

English ( Master) Reading Comprehension (C)

Read the passage below and answer the following questions.
Geologists Harris and Gass hypothesized that the Red Sea rift developed along the line of a suture (a splice in the Earth’s crust) formed during the late Proterozoic era, and that significant observable differences in the composition of the upper layers of rocks deposited on either side of the suture give clues to the different natures of the underlying igneous rocks.
Other geologists argued that neither the upper rock layer nor the underlying igneous rocks on the one side of the rift differ fundamentally from the corresponding layers on the other side. These geologists believe, therefore, that there is inadequate evidence to conclude that a suture underlies the rift.
In response, Harris and Gass asserted that the upper rock layers on the two sides of the rift had not been shown to be of similar age, structure, or geochemical content. Furthermore, they cited new evidence that the underlying igneous rocks on either side of the rift contain significantly different kinds of rare metals.

It can be inferred from the passage that Harris and Gass have done which of the following?

Drawn detailed diagrams of the Red Sea rift.

Based their conclusions on the way in which sutures develop in the Earth’s crust.

Rejected other geologists objections to their hypothesis about the Red Sea rift.

Asserted that rifts usually occur along the lines of sutures.

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Explanation:

- Passage Summary:

Harris and Gass proposed that the Red Sea rift has a suture beneath it, based on differences in rock compositions on either side. Other geologists disagree, citing similarities in rock layers on both sides.

- Option 1:

"Drawn detailed diagrams of the Red Sea rift."

The passage doesn't mention them creating diagrams.

- Option 2:

"Based their conclusions on the way in which sutures develop in the Earth’s crust."

The focus is more on rock composition rather than the suture development process.

- Option 3:

"Rejected other geologists' objections to their hypothesis about the Red Sea rift."

Harris and Gass address and refute the objections using new evidence.

- Option 4:

"Asserted that rifts usually occur along the lines of sutures."

They didn't generalize about rifts, focusing instead on this specific case.