This is the 10011th most frequent French word.
garantissent
"Garantissent" means "guarantee" or "ensure" (third person plural of "garantir").
In this sentence, 'garantissent' implies assurance or a promise given by the employees to consistently provide excellent service.
Les employés garantissent un excellent service à leurs clients.
The employees guarantee excellent service to their customers.
Here, 'garantissent' is used to indicate that the contracts enforce or safeguard the rights legally specified.
Les contrats signés garantissent les droits des parties impliquées.
The signed contracts guarantee the rights of the parties involved.
In this usage, 'garantissent' conveys the idea that the practices ensure or secure desirable outcomes for the planet's future.