All of the above because for one reason:
Isaiah 42:1-3 KJV
1 Behold my servant, whom I uphold; mine elect, in whom my soul delighteth; I have put my spirit upon him: he shall bring forth judgment to the Gentiles.
2 He shall not cry, nor lift up, nor cause his voice to be heard in the street.
3 A bruised reed shall he not break, and the smoking flax shall he not quench: he shall bring forth judgment unto truth.
Matthew 12:17-20 KJV
17 That it might be fulfilled which was spoken by Esaias the prophet, saying,
18 Behold my servant, whom I have chosen; my beloved, in whom my soul is well pleased: I will put my spirit upon him, and he shall shew judgment to the Gentiles.
19 He shall not strive, nor cry; neither shall any man hear his voice in the streets.
20 A bruised reed shall he not break, and smoking flax shall he not quench, till he send forth judgment unto victory.
And for another reason:
Genesis 22:2 KJV
2 And he said, Take now thy son, thine only son (H3173 יחיד) Isaac, whom thou lovest, and get thee into the land of Moriah; and offer him there for a burnt offering upon one of the mountains which I will tell thee of.
Genesis 22:2 LXX (Brenton Translation)
2 And he said, Take thy son, the beloved one, (G27 αγαπητος) whom thou hast loved - Isaac, and go into the high land, and offer him there for a whole-burnt-offering on one of the mountains which I will tell thee of.
Greek "agapetos", ("beloved") = Hebrew "yachid", ("one and only", (beloved implied).
Moreover, concerning Isaac, yachid also implies chosen because he was not an only son.