Your friend, Maria Lucia, likes to scroll through TikTok when she wakes up in the morning. She commented to you that she is finding a lot of TikToks about a particular reality show: As a digital marketing student, you inform Maria Lucia that the for TikTok likely took into account her engagement with posts on the app and if any of her friends on the app also interacted with those reality show posts.

a$.$ UTM parameter

b$.$ search engine marketing $($SEM$)$

c$.$ P$.$O$\mathrm{.}5.$T$.$ Methodology

d$.$ social media algorithm