The phrase "a reliable answer" is correct and usable in written English.
You can use it when referring to an answer that is trustworthy or dependable, often in contexts where accuracy is important.
Example: "After conducting thorough research, I was able to provide a reliable answer to the client's question."
Alternatives: "a trustworthy response" or "a dependable solution."
Genius is not a reliable answer.
You'll get good data and a reliable answer.
Luckily for me, I have a reliable answer: listen to a poet read his work aloud.
That means that a useful computer will need tens of thousands of qubits to come up with a reliable answer.
These protocol components are each designed with the goal of providing a reliable answer to the questions being asked in the trial.
Future systematic review and meta-analysis of RCTs will provide a reliable answer to the question whether laparoscopic hysterectomy is a safe approach in women with endometrial cancer.
Who and what Robert Walser really was is a question to which, despite my strangely close relationship with him, I am unable to give any reliable answer.
In addition, it seems that a holistic approach (involving the analysis of metabolite profiles as a reflection of the individual's health status) can provide a more reliable answer as to the presence or absence of cancer.
Many researchers have looked into the issue of disability and violence, but the Lancet study combines their results aiming to provide a more reliable answer.
The next logical step after using such tools is to design functional studies to test the related drugs and find a more reliable answer as to whether such mutations are drivers of carcinogenesis or just background mutations.
This will need to be assessed based on the study being conducted, where scientific rigour with an improved response rate and less chance of non-response error needs to be balanced with the value of the study question and the need for a scientifically reliable answer.
