Assertion (A) : There are no tea plantations in any African country. Reason (R) : Tea plants need fertile soil with high humus.

The Assertion is false — Africa has extensive tea plantations and is a major tea-producing region (notably Kenya, Malawi, Rwanda and others), with tea being a key export and livelihood source in countries like Kenya [2]. The Reason is essentially true: tea requires specific fertile soils — well‑drained, light loamy and often acidic soils — and African tea areas are typically highland, acidic volcanic soils managed with mulching/fertilization to maintain fertility and moisture, matching typical tea soil requirements [1]. Thus A is incorrect while R correctly describes the crop’s soil needs, so option 4 is appropriate.

Sources

1. [1] https://www.unido.org/sites/default/files/2017-03/Kenya-country-report-DIGITAL-FINAL-20170302-OnePage_0.pdf
2. [2] https://futureclimateafrica.org/wp-content/uploads/2021/10/FCFA_Tea_Synthesis_report_final_2021.pdf
3. [3] Environment and Ecology, Majid Hussain (Access publishing 3rd ed.) > Chapter 12: Major Crops and Cropping Patterns in India > Tobacco > p. 57