Which verb is correct in this context? adapt/ habituate

Hi,

What is the right verb in this context? adapt/ habituate

"32 male Wistar rats (weighing 220-300 gr) were randomly divided into 4 groups of 8 and were kept in a chamber with the environmental conditions of 22 ± 2 ° C temperature, 12: 12 light percentage, with free access to water and food, one week prior to testing to adapt to the new environment."

Thanks!