The phrase "assertion is supported" is correct and usable in written English.
It can be used when discussing whether a claim or statement is backed by evidence or reasoning.
Example: "The research findings indicate that the assertion is supported by the data collected during the study."
Alternatives: "claim is validated" or "statement is backed".
That assertion is supported by the long rap sheet Gray accumulated over his short life.
This assertion is supported in the exercise context where strength of exercise identity relates to exercise behaviour.
This harsh assertion is supported by posing a simple question: "Where in the world have HIAs been carried out?" To answer this question, we systematically searched the peer-reviewed literature and online HIA-specific databases.
This assertion is supported by Dr. Mowrey's review of the FDA's AER list--he found that none of the serious adverse events had occurred when the product when the product was ingested properly.
That assertion is supported by demographic data showing that older donors, particularly women, have been the biggest supporters of groups helping the poor, said Robert F. Sharpe, a fund-raising consultant.
When modeling flux densities as solution variables, it is argued that solenoidal function spaces should be used, rather than the standard divergence-conforming function spaces; this assertion is supported by the results.
That assertion is supported by the boss of mobile estate agent Fernando Ferrufino.
This assertion is supported by data from across the tropics [69 71].
This assertion is supported also by the AFM and KFM data.
Furthermore, this assertion is supported by the fact that C. ventricosus has nonplanktotrophic development (Kohn and Perron 1994).
This assertion is supported by previous work performed in rats where increased oxidative stress was related to accelerated telomere shortening and decreased renal function [50].
