The answer is
Yet.
A coordinated conjuction is a word that joins or coordinates two senteces together, in this case the word yet is conectint he was but a child, and giving meaning to the whole sentece by conecting to he did so much for others, if you read it without the yet, the sentence looses force in the statement.
The best answer to the fill in the blanks question which is '<span>Text _____ defines the appearance and shape of letters, numbers, punctuation marks, and symbols.' would be 'style'. Text style can go in different forms - examples are Serifs, Times New Roman, and Comic Sans.</span>
<span>possessive noun, happy to assist you!</span>
•Plot
•character
•setting
•theme
•point of view