Final answer:
The eukaryotic analog of the RecA strand invasion protein is C) Rad51, which plays a role in initiating synapsis during meiosis and in DNA repair in eukaryotic cells.
Step-by-step explanation:
The eukaryotic analogs of the RecA strand invasion protein are proteins such as RPA, Rad51, and DMC1. These proteins bind to overhanging DNA to form a nucleoprotein filament and initiate strand invasion at similar sequences. Out of the options given, C) Rad51 is the correct answer as it is the homolog of RecA in Eukaryotes, where it initiates synapsis during meiosis and also plays a role in DNA repair.