/gives brainliest a disease-resistant variety of a sexually reproducing crop was planted on a field with an existing nonresistant variety. after a few years, pests severely attacked the plants. the older, nonresistant plants died. however, the recently grown plants survived. why did the new plants survive? a) the pests can’t attack the new plants. b) the new plants had the resistant gene. c) the old plants were covered with low-grade insecticides. d) the new plant variety was younger than the initial plants. e) the recently grown plants had an increased life span.

B). To help deduce the meaning of an unfamiliar word.

Explanation:

Context clues are demonstrated as the clues or hints that assist the readers to deduce or define the meaning of an unfamiliar word employed by the author. These clues are provided to clarify the meaning of the unusual words and the context in which they've been used by the author. These clues appear usually in the same sentence or the sentence followed by it. These clues may include synonyms, antonyms, an elaboration, or some particular illustrations to reflect or clarify the meaning. Thus, option B is the correct answer.