Alphabet Inc.’s Google, Yahoo! Inc. and Microsoft Corp. have agreed to block ads for Indian services that help determine a baby’s sex before birth, adhering to laws intended to address one of the world’s worst gender imbalances. All three companies pledged to honor bans on the promotion of sexual-determination tests and related products, the health ministry told India’s Supreme Court on September 19. The court was hearing a case that sought the abolition of all content on search engines that promote such services. India’s highest court this year reproached the search giants for disregarding domestic regulations, and warned them to abide by the law or cease operations in the country. But the trio of companies had said sweeping bans on offending key-words would also block non-promotional content such as research reports and news articles.