Read the sentence. I could tell by the mischievous gleam in their eyes and the sneaky looks they were exchanging that my little brother and sister had been planning to deceive me in some way. The most precise replacement for the underlined word is " ."

This question is incomplete. I've found the complete question online. It is as follows:

Read the sentence.

I could tell by the mischievous gleam in their eyes and the sneaky looks they were exchanging that my little brother and sister had been planning to deceive me in some way.

The most precise replacement for the underlined word is "."

A. Arranging

B. Preparing

C. Conniving

D. Organizing

The most precise replacement for "planning" is C. conniving.

Explanation:

To answer this question correctly, we must pay close attention to the context. The word "planning" could be easily substituted by any of the options given. However, in the text, we have clues to its meaning. Words such as "mischievous", "sneaky", and "deceive" make it clear that the brother and sister are up to no good. In this case, the best option is C. conniving. The verb "to connive" can be defined as the action of conspiring to do something harmful or illegal. The brother and sister are conniving to deceive the speaker.