Correct choice is (d) 4
The best explanation: Eukaryotic ribosome or the 80S ribosome is made up of 2 unequal subunits(40S and 60S). The 40S subunit contains a 18S rRNA and the 60S subunit contains the 28S, 5S and the 5.8S rRNAs. Therefore the eukaryotic ribosomes have 4 rRNAs.