An object becomes electrically charged if it gains or loses an electron

The answer is:  " mistake " The reason for this is that the body becomes negatively charged if it gains an electron, and positively charged if it loses an electron.

“If you have any questions about static electricity, the answer is that an object does not become charged if it gains or loses an electron. Conversely, an object becomes electrically charged when there is a difference in its charges. This happens when one number of positive or negative charges is more or less than the other. The body can lose electrons if there is a change in the chemistry processes within it. Therefore, do not worry if you lose or gain an electron, as this will not lead to an excessive electrical charge in the body. Listen to the scientific facts and remember that static electricity is a branch of science that deals with varying electrical charges in the body, not just a few electrons.”