The phrase "an answer could be" is correct and usable in written English.
It can be used when suggesting a possible response or solution to a question or problem.
Example: "In response to the question about climate change, an answer could be to implement more renewable energy sources."
Alternatives: "a response might be" or "one possible answer is".
Mr. MacDonald believes that an answer could be a new type of cable outlet.
Neither was helped by the format, in which some questions rambled and most questioners interjected before an answer could be given.
Looking back at the Great Depression, Arthur Schlesinger Jr. wrote that even in that period of profound political and economic crisis, Americans held fast to "the desperate inner conviction that somewhere an answer could be found".
As a person with several autoimmune diseases -- celiac disease (sprue), rheumatoid arthritis, myasthenia gravis and Hashimoto's disease -- I would gladly be a guinea pig for gene testing if an answer could be found on why I developed these diseases and whether there is anything I can do to keep my children and grandchildren from developing them.
If properties literally had parts corresponding to the parts of the linguistic expression, an answer could be forthcoming, but few philosophers are willing to admit this.
Saint Paul's lost its accreditation with the Southern Association of Colleges and Schools Commission on Colleges and instead of carrying on classes as usual until an answer could be found, decided to close its doors.
A relevant answer could be taken from a transcriptomic comparison between female IVF and female SCNT embryos, which we are currently researching.
This observation raises the question of why those graduating from Eastern European medical schools are not completing residency training in Lebanon, A possible answer could be related to a problem of availability and quality of residency training in Lebanon, as students of Lebanese medical schools have suggested [ 3].
A personal interview can also be mandated, so a wrong answer could be disastrous.
A surprising answer could be the largely overlooked small-capitalization stocks on the Stock Exchange of Thailand (SET).
A possible answer could be that this layer would be easily removed by the immense shear stress exerted by a thick landslide, which after scraping the layer off would essentially travel on bare ice.
