Answer:
First letter.
Explanation:
Acronyms use the first letter of each word for their phrase.
A few examples can include: ETA, BRB, MIA
E stimated
T ime
A rrival
B e
R ight
B ack
M issing
I n
A ction
Correlation- a measure of association between two variable.
Here using symbols demonstrates your feelings, and so the reader/viewer/listener and understand the topic more clearly and their reactions will be more likely as you think
