The phrase "an indisputable link" is correct and usable in written English.
It can be used when discussing a strong, undeniable connection or relationship between two or more things, often in academic or formal contexts.
Example: "The research provided an indisputable link between smoking and lung cancer, highlighting the dangers of tobacco use."
Alternatives: "a clear connection" or "an undeniable relationship."
There is an indisputable link between his fortunes and those of his team.
Recent research has highlighted an indisputable link between toilets, malnutrition and irreversible stunting.
We know there is an indisputable link between movement and cognition, with the former actually enhancing the latter.
There is an indisputable link between elevated levels of LDL-C and the risk of developing atherosclerosis, with population studies indicating that LDL-C rises with age in both sexes in a large number of individuals [ 5, 68, 69].
Given the indisputable link between the commission of animal abuse and violence against humans, prosecuting animal abusers could potentially prevent future crime.
This indisputable link between the virus and the neoplastic disease led to a change in the virus name that is now known as KS-associated herpes virus.
"The results of our analysis of the performance of the Health Mediators show that it is an indisputable fact that the goal of the Roma Health Mediator, to act as a link between the healthcare system and the Roma community, has been fully achieved," Minister Loncar said.
Although air pollution is an indisputable carcinogen for lung cancer based on a number of studies, the exact link and extent of the association in China have not been established because of a lack of data.
There is an indisputable authority that presents itself in the decision situation, which is closely linked to and enhanced by the woman's exclusive vulnerability.
History would show how existing sovereigns were preordained with an indisputable right to rule by 'extracting from' all the 'vicious and violent accidents [of the past] which are linked to error, a basic and permanent rationality which is, by its very essence, bound up with fairness and the good' (Foucault, 2004[1976b]: 55).
It is an indisputable fact.
