Which of the following is true about a redox reaction? in a redox reaction, an electron is lost by the reducing agent.
in a redox reaction, an electron is lost by the oxidizing agent.
in a redox reaction, the oxidized species gains electrons.
in a redox reaction, the reduced species loses electrons.

In a redox reaction, an electron is lost by the reducing agent.

Explanation: Redox reaction is a reaction in which reduction and oxidation both take place.

Oxidation is a process of loss of electrons. Oxidizing agent is one which oxidizes other and itself gets reduced i.e gain electrons.

Reduction is a process of gain of electrons.Reducing agent is  one which reduces other and itself gets oxidized i.e lose electrons.

In this redox reaction, gets reduced to Fe and thus act as oxidising agent. gets oxidised and act as reducing agent.

pla·gia·rism

/ˈplājəˌrizəm/

learn to pronounce

noun

the practice of taking someone else's work or ideas and passing them off as one's own.

explanation: