The phrase "a main objective was" is correct and usable in written English.
It can be used when discussing the primary goal or aim of a project, study, or initiative.
Example: "In our research, a main objective was to determine the impact of climate change on local ecosystems."
Alternatives: "a primary goal was" or "a key aim was".
A main objective is to impart an integrated overview of science and the concept of evolution.
A main objective is to examine scope sensitivity using a novel approach.
A main objective is to improve the recreational and ecological value of stormwater while achieving a cost-effective solution.
A main objective is to explore and utilize frequencies and "correlations" among the involved factors, in order to weight and evaluate crucial mistakes and misguided actions.
A main objective is to determine whether the use of pulse or pulse reverse plating can overcome the anomalous behavior of this system whereby cobalt preferentially deposits over nickel even from solutions containing more NiSO4 than CoSO4.
However, a main objective is to critically discuss the assumptions necessary to convert the monetary values elicited in willingness to pay (WTP) studies to values than can be use for policy purposes.
A main objective is a better understanding of the relationship between biomechanical changes at the level of the vocal folds – as induced by pathology and tissue reaction to strain – and alterations of the acoustical voice signal.
"A main objective is to ensure that rapid onset emergencies are managed with the utmost skill and efficiency.
Hosseini et al. (2013) considered stochastic lead time, and developed a multi-objective pricing-inventory model for a retailer, where their main objective was to maximize retailer's profit and service level.
A revised definition of FPC was presented in 2012 100) by a working group whose main objective was to make the indicator simpler and dependent upon fewer survey questions.
