This is the 4961st most frequent Spanish word.
efectivas
Effective.
In this sentence, 'efectivas' is used as an adjective, describing the strategies (plural, feminine) as being successful or producing a desired result.
Las estrategias utilizadas por la empresa son muy efectivas.
The strategies used by the company are very effective.
In this example, 'efectivas' describes policies (plural, feminine) as being impactful or functional in achieving safety improvements.
Hemos implementado políticas efectivas para mejorar la seguridad.
We have implemented effective policies to improve safety.
Here, 'efectivas' relates to measures (plural, feminine) that achieve the desired prevention of diseases.