"alternatives were developed" is a correct and usable part of a sentence in written English.
You can use it when referring to solutions or ideas that have been created as an alternative to something else. For example, "After the original plan failed, alternatives were developed to ensure the project would still come to fruition."
In the 1980s, despite persistent scientific uncertainties over the threat to the ozone layer, action to move away from ozone-damaging chemicals was swift, largely because there was little cost involved and alternatives were developed as the need arose, experts said.
Many alternatives were developed to improve habitat destruction in urban environments, however, until now, many unsuccessful.
First, energy efficient design parameters were derived from the literature and design alternatives were developed accordingly.
The degree to which multiple alternatives were developed in these decision processes was then evaluated based on two items on a seven-point Likert scale, which ranged from 1 = not at all to 7 = to a great extent.
Many large Internet companies such as Facebook, Google, LinkedIn and Amazon identified these limitations [1, 4 6] and in-house alternatives were developed, which were later called non-relational or NoSQL databases.
Moreover, a total of 14 forecasting model alternatives for all six end-use consumption categories, as well as three total indoor bottom-up forecasting model alternatives were developed in this study.
The forecasts are made in The Way We Pay 2010 by the Payments Council – the national body which has decided to phase out cheques by October 2018 provided alternatives are developed.
Also, an additional comparison technique for comparing sub-component alternatives is developed, called "scoring matrix".
In this paper, the design and control of two reaction-separation-recycle process alternatives are developed.
Thus, the need for alternative non-fossil fuel-based technologies is essential as is the need for research along these lines so that promising alternatives are developed.
The arguments mentioned above show that strategic planning can be beneficial for strategic decisions if multiple strategic alternatives are developed prior to strategic choice.
