How does Amazon use its Alexa ecosystem to improve its products and services?

a$.$ By gathering consumer behavior data from Alexa touchpoints.

O b$.$ By providing Alexa with a multitude of voice$-$recognition options.

O c$.$ By frequently updating the Alexa$-$enabled devices.

O d$.$ By embedding Alexa in low$-$end devices like the Echo Dot.

Oe$.$ By offering telepresence services through Alexa.