Question

Which TWO revisions improve verb tense consistency in the introduction?

A. Change “can twist and turn” to “twisted and turned”
B. Change “can cause” to “caused”
C. Change “can cause” to “can create”
D. Change “is our planet ready” to “will our planet be ready”
E. Change “it’s” to “it was” in “it’s still our planet”
Read the group’s introductory paragraph below.
We all know space is a vast place filled with billions of stars, planets, and galaxies, and our knowledge of it has grown as scientists continue to study it. As this understanding has increased, so has the question: “Should humans build a home in space?” For global policymakers deciding our future, this is an important issue. Based on the ethical need to protect humanity, the economic opportunities space could offer, and the environmental challenges growing on Earth, humans should begin investing in building homes in space. Our expanding knowledge of space makes this goal realistic and necessary for our long-term survival.

A strong introduction should:

Present a clearly worded claim
Be written in a style appropriate for the target audience

Answer 1

None of the above. The listed options refer to phrases that do not occur in the paragraph, so none of those specific revisions apply. The introduction already uses consistent present and present-perfect tenses; the only small improvement you might make for tighter consistency is to change "could offer" to "can offer," but that option is not offered.