Final answer:
An electron would be electrically attracted to a positron because they have opposite charges, with the electron carrying a negative charge and the positron carrying a positive charge.
Step-by-step explanation:
Among the given options, a positron would be electrically attracted to an electron. A positron is the antiparticle of the electron, carrying a positive charge of +1, whereas an electron has a negative charge of -1. According to the fundamental principle of electric charges, opposite charges attract each other. On the other hand, a proton, which also carries a positive charge, would not be attracted to a positron due to their like charges. Neutrons are electrically neutral and, therefore, would not be attracted or repelled by a positron. Another positron would similarly not be attracted to the first positron, as both have the same positive charge.