A sentence/a part of the sentence is underlined. Five alternatives are given to the underlined part which will improve the meaning of the sentence. Choose the correct alternative. In case no improvement is needed, click the option corresponding to "No improvement.”
Techniques for manipulating genes in plants, and animals, have developed swiftly in last three decades.
1
in a last
2
in the last
3
to last
4
with last
5
No improvement