Young leaves turn into chlorotic and stalks become short due to a deficiency of which nutrient?

Correct option is A

Young leaves turning chlorotic (yellowing) and stalks becoming short are indicative of iron deficiency in plants. Iron is a vital micronutrient required for chlorophyll synthesis and overall plant growth. When iron is deficient, chlorophyll production is impaired, leading to the characteristic yellowing of young leaves, a condition known as chlorosis, and stunted growth due to insufficient chlorophyll for photosynthesis.