The above statement infers that there was an earlier arrangement. Hence the requirement for a revert by Friday. No later than Friday mean that the respondents response must get to the narrator on or before Friday.
<h3>What is an inference?</h3>
An inference is a statement that is indicative of a conclusion that is made after one has gone through the information in a text.
Hence it is right to state that the above statement infers that there was an earlier arrangement. Hence the requirement for a revert by Friday.
I choose two because look at the meaning of Scylla and Charybdis
"In classical mythology, Scylla was a horrible six-headed monster who lived on a rock on one side of a narrow strait. Charybdis was a whirlpool on the other side. When ships passed close to Scylla's rock in order to avoid Charybdis, she would seize and devour their sailors."