5. Solar energy, tidal energy, geothermal energy, and biomass 'are
unreliable sources of energy
politically divisive sources of energy
sources of energy that will not run out
sources of energy that we do not know how to use

$3.48

Explanation:

Net income ÷Shares of common stock outstanding + Preferred stock convertible shares of common stock.

Net income 6,800,000

Shares of common stock outstanding 1,200,000

Preferred stock convertible 750,000

Hence:

$6,800,000/ ($1,200,000 + $750,000)

=$6,800,000/$1,950,000

=$3.48

Therefore the diluted earnings per share for 2021 is $3.48