Marc, christophe, which one of you two wants to come?

Bonjour

Do not forget to put capital letters on first names

Marc, Christophe,/ which one/ of you /two / wants/ to come ?

Marc, Christophe,/  lequel  /  de vous/ deux / veut / venir ?

Which one = lequel  (masc. sing. as Marc & Christophe  are both masculine  first names.

lequel  + masc. sing. noun

laquelle + fem. sing. noun

lesquels + masc. plural noun

lesquelles + fem. plural nouns

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of you  / two= de vous / deux

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wants = veut (vouloir 3rd pers. sing.)

VOULOIR présent

je veux

tu veux

il /elle / on veut

nous voulons

vous voulez

ils/elles veulent

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to come = venir (infinitive)

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hope this helps ☺☺☺

for an essay you should be giving 300 points