Crop variety improvement is done to achieve .

The correct option is A higher yield
$\bullet$ Crop variety improvement is an initiative to improve overall food crop production. The growth of crop variety with desirable and strong traits is the objective of this method.
$\bullet$ The main goals of crop variety improvement are:
i. Higher yield
ii. Improved quality
iii. Change in the maturity period or faster maturity
iv. Wider adaptability
v. Desirable agronomic characteristics