In bacteria, a partially diploid strain may result from:
A. specialized transduction.
B. acquisition of F factor.
C. natural transformation (not electroporation).
D. acquisition of an F' factor.
E. generalized transduction.

Option A. specialized transduction and Option D. acquisition of an F' factor.

Explanation:

A partial diploid strain occurs in a bacteria due to specialized transduction and the acquisition of an F' factor.

This allows the bacteria to have or possess duplicates (2 copies) of some of its genetic elements (Chromosomes). One of those copies can be found on the chromosome of the bacteria while the second copy can be found in the plasmid of the bacteria.

Bacteria that have been found to possess the partial diploid strain are known as Merodiploids.

the relative atomic mass of an element is the mass of one atom of that element, relative to 1/12th of the mass of a  1212c atom. to convert to an absolute mass in kg, it is necessary to multiply by  1.661×10−271.661×10−27.

the relative atomic mass is roughly equal to the number of neutrons, plus the number of protons, in the nucleus of the atom.

for elements with more than one stable isotope (different types of nucleus with different numbers of neutrons but the same number of protons), the quoted mass is usually the average mass, weighted by the relative abundance of the different isotopes.

the statements that apply here about binary star system are

"have stars that might appear to wobble"

"often have one star that is brighter than other"

a binary star is a star system consisting of two stars revolving around their common barycenter. systems of two or more stars are called multiple star systems.